20494672692 has 24 divisors (see below), whose sum is σ = 51499434336. Its totient is φ = 6306053088.

The previous prime is 20494672691. The next prime is 20494672703. The reversal of 20494672692 is 29627649402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20494672691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65687898 + ... + 65688209.

It is an arithmetic number, because the mean of its divisors is an integer number (2145809764).

Almost surely, 2^20494672692 is an apocalyptic number.

It is an amenable number.

20494672692 is an abundant number, since it is smaller than the sum of its proper divisors (31004761644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20494672692 is a wasteful number, since it uses less digits than its factorization.

20494672692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131376127 (or 131376125 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 51.

The spelling of 20494672692 in words is "twenty billion, four hundred ninety-four million, six hundred seventy-two thousand, six hundred ninety-two".