64156971472602 has 16 divisors (see below), whose sum is σ = 128324215606752. Its totient is φ = 21383945047280.

The previous prime is 64156971472597. The next prime is 64156971472603. The reversal of 64156971472602 is 20627417965146.

It is a super-2 number, since 2×64156971472602² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64156971472603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 427946373 + ... + 428096264.

It is an arithmetic number, because the mean of its divisors is an integer number (8020263475422).

Almost surely, 2^{64156971472602} is an apocalyptic number.

64156971472602 is an abundant number, since it is smaller than the sum of its proper divisors (64167244134150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64156971472602 is a wasteful number, since it uses less digits than its factorization.

64156971472602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856055133.

The product of its (nonzero) digits is 30481920, while the sum is 60.

The spelling of 64156971472602 in words is "sixty-four trillion, one hundred fifty-six billion, nine hundred seventy-one million, four hundred seventy-two thousand, six hundred two".