552166636578 has 32 divisors (see below), whose sum is σ = 1129652661312. Its totient is φ = 179863320000.

The previous prime is 552166636543. The next prime is 552166636649. The reversal of 552166636578 is 875636661255.

It is a super-2 number, since 2×552166636578² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3379093 + ... + 3538728.

It is an arithmetic number, because the mean of its divisors is an integer number (35301645666).

Almost surely, 2^552166636578 is an apocalyptic number.

552166636578 is an abundant number, since it is smaller than the sum of its proper divisors (577486024734).

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

552166636578 is a wasteful number, since it uses less digits than its factorization.

552166636578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6918130.

The product of its digits is 54432000, while the sum is 60.

The spelling of 552166636578 in words is "five hundred fifty-two billion, one hundred sixty-six million, six hundred thirty-six thousand, five hundred seventy-eight".