19632668937025 has 12 divisors (see below), whose sum is σ = 24522206635692. Its totient is φ = 15591491824640.

The previous prime is 19632668936963. The next prime is 19632668937043. The reversal of 19632668937025 is 52073986623691.

It can be written as a sum of positive squares in 6 ways, for example, as 3079561697424 + 16553107239601 = 1754868^2 + 4068551^2 .

It is a de Polignac number, because none of the positive numbers 2^k-19632668937025 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2866079632 + ... + 2866086481.

It is an arithmetic number, because the mean of its divisors is an integer number (2043517219641).

Almost surely, 2^{19632668937025} is an apocalyptic number.

It is an amenable number.

19632668937025 is a deficient number, since it is larger than the sum of its proper divisors (4889537698667).

19632668937025 is a wasteful number, since it uses less digits than its factorization.

19632668937025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5732166260 (or 5732166255 counting only the distinct ones).

The product of its (nonzero) digits is 176359680, while the sum is 67.

The spelling of 19632668937025 in words is "nineteen trillion, six hundred thirty-two billion, six hundred sixty-eight million, nine hundred thirty-seven thousand, twenty-five".