64172962026452 has 12 divisors (see below), whose sum is σ = 112409740449300. Its totient is φ = 32055893326656.

The previous prime is 64172962026421. The next prime is 64172962026473. The reversal of 64172962026452 is 25462026927146.

It can be written as a sum of positive squares in 2 ways, for example, as 49610525988676 + 14562436037776 = 7043474^2 + 3816076^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7646916923 + ... + 7646925314.

It is an arithmetic number, because the mean of its divisors is an integer number (9367478370775).

Almost surely, 2^{64172962026452} is an apocalyptic number.

It is an amenable number.

64172962026452 is a deficient number, since it is larger than the sum of its proper divisors (48236778422848).

64172962026452 is a wasteful number, since it uses less digits than its factorization.

64172962026452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15293843290 (or 15293843288 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 56.

The spelling of 64172962026452 in words is "sixty-four trillion, one hundred seventy-two billion, nine hundred sixty-two million, twenty-six thousand, four hundred fifty-two".