64497254402 has 12 divisors (see below), whose sum is σ = 112541127750. Its totient is φ = 27641680416.

The previous prime is 64497254401. The next prime is 64497254417. The reversal of 64497254402 is 20445279446.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 63988255681 + 508998721 = 252959^2 + 22561^2 .

It is not an unprimeable number, because it can be changed into a prime (64497254401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 329067527 + ... + 329067722.

Almost surely, 2^64497254402 is an apocalyptic number.

64497254402 is a deficient number, since it is larger than the sum of its proper divisors (48043873348).

64497254402 is a wasteful number, since it uses less digits than its factorization.

64497254402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658135265 (or 658135258 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 47.

The spelling of 64497254402 in words is "sixty-four billion, four hundred ninety-seven million, two hundred fifty-four thousand, four hundred two".