61624348787 has 2 divisors, whose sum is σ = 61624348788. Its totient is φ = 61624348786.

The previous prime is 61624348783. The next prime is 61624348837. The reversal of 61624348787 is 78784342616.

61624348787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61624348787 - 2² = 61624348783 is a prime.

It is not a weakly prime, because it can be changed into another prime (61624348783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30812174393 + 30812174394.

It is an arithmetic number, because the mean of its divisors is an integer number (30812174394).

Almost surely, 2^61624348787 is an apocalyptic number.

61624348787 is a deficient number, since it is larger than the sum of its proper divisors (1).

61624348787 is an equidigital number, since it uses as much as digits as its factorization.

61624348787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10838016, while the sum is 56.

The spelling of 61624348787 in words is "sixty-one billion, six hundred twenty-four million, three hundred forty-eight thousand, seven hundred eighty-seven".