19077664625 has 8 divisors (see below), whose sum is σ = 23808925608. Its totient is φ = 15262131600.

The previous prime is 19077664607. The next prime is 19077664631. The reversal of 19077664625 is 52646677091.

It can be written as a sum of positive squares in 4 ways, for example, as 609941809 + 18467722816 = 24697^2 + 135896^2 .

It is not a de Polignac number, because 19077664625 - 2⁸ = 19077664369 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 76310534 + ... + 76310783.

It is an arithmetic number, because the mean of its divisors is an integer number (2976115701).

Almost surely, 2^19077664625 is an apocalyptic number.

It is an amenable number.

19077664625 is a deficient number, since it is larger than the sum of its proper divisors (4731260983).

19077664625 is an equidigital number, since it uses as much as digits as its factorization.

19077664625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152621332 (or 152621322 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 53.

The spelling of 19077664625 in words is "nineteen billion, seventy-seven million, six hundred sixty-four thousand, six hundred twenty-five".