64574447546 has 48 divisors (see below), whose sum is σ = 117617443200. Its totient is φ = 26041932000.

The previous prime is 64574447537. The next prime is 64574447573.

64574447546 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×64574447546² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64574447491 and 64574447500.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 710171 + ... + 795921.

It is an arithmetic number, because the mean of its divisors is an integer number (2450363400).

Almost surely, 2^64574447546 is an apocalyptic number.

64574447546 is a deficient number, since it is larger than the sum of its proper divisors (53042995654).

64574447546 is a wasteful number, since it uses less digits than its factorization.

64574447546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85947 (or 85928 counting only the distinct ones).

The product of its digits is 45158400, while the sum is 56.

The spelling of 64574447546 in words is "sixty-four billion, five hundred seventy-four million, four hundred forty-seven thousand, five hundred forty-six".