64877425810 has 16 divisors (see below), whose sum is σ = 116809464600. Its totient is φ = 25944281856.

The previous prime is 64877425807. The next prime is 64877425843. The reversal of 64877425810 is 1852477846.

It can be written as a sum of positive squares in 4 ways, for example, as 41913963441 + 22963462369 = 204729^2 + 151537^2 .

It is a super-2 number, since 2×64877425810² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 795225 + ... + 873004.

Almost surely, 2^64877425810 is an apocalyptic number.

64877425810 is a deficient number, since it is larger than the sum of its proper divisors (51932038790).

64877425810 is a wasteful number, since it uses less digits than its factorization.

64877425810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1672125.

The product of its (nonzero) digits is 3010560, while the sum is 52.

The spelling of 64877425810 in words is "sixty-four billion, eight hundred seventy-seven million, four hundred twenty-five thousand, eight hundred ten".