20971552601 has 2 divisors, whose sum is σ = 20971552602. Its totient is φ = 20971552600.

The previous prime is 20971552583. The next prime is 20971552619. The reversal of 20971552601 is 10625517902.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (20971552583) and next prime (20971552619).

It can be written as a sum of positive squares in only one way, i.e., 15331392400 + 5640160201 = 123820^2 + 75101^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20971552601 is a prime.

It is not a weakly prime, because it can be changed into another prime (20971552691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10485776300 + 10485776301.

It is an arithmetic number, because the mean of its divisors is an integer number (10485776301).

Almost surely, 2^20971552601 is an apocalyptic number.

It is an amenable number.

20971552601 is a deficient number, since it is larger than the sum of its proper divisors (1).

20971552601 is an equidigital number, since it uses as much as digits as its factorization.

20971552601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 38.

The spelling of 20971552601 in words is "twenty billion, nine hundred seventy-one million, five hundred fifty-two thousand, six hundred one".