15630000977 has 2 divisors, whose sum is σ = 15630000978. Its totient is φ = 15630000976.

The previous prime is 15630000961. The next prime is 15630001061. The reversal of 15630000977 is 77900003651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14944818001 + 685182976 = 122249^2 + 26176^2 .

It is an emirp because it is prime and its reverse (77900003651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15630000977 - 2⁴ = 15630000961 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15630000977.

It is not a weakly prime, because it can be changed into another prime (15630050977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7815000488 + 7815000489.

It is an arithmetic number, because the mean of its divisors is an integer number (7815000489).

Almost surely, 2^15630000977 is an apocalyptic number.

It is an amenable number.

15630000977 is a deficient number, since it is larger than the sum of its proper divisors (1).

15630000977 is an equidigital number, since it uses as much as digits as its factorization.

15630000977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39690, while the sum is 38.

The spelling of 15630000977 in words is "fifteen billion, six hundred thirty million, nine hundred seventy-seven", and thus it is an aban number.