557716665508 has 12 divisors (see below), whose sum is σ = 976023830320. Its totient is φ = 278852713992.

The previous prime is 557716665503. The next prime is 557716665523. The reversal of 557716665508 is 805566617755.

It is a super-2 number, since 2×557716665508² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (61) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (557716665503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1177266 + ... + 1581577.

Almost surely, 2^557716665508 is an apocalyptic number.

It is an amenable number.

557716665508 is a deficient number, since it is larger than the sum of its proper divisors (418307164812).

557716665508 is a wasteful number, since it uses less digits than its factorization.

557716665508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2809386 (or 2809384 counting only the distinct ones).

The product of its (nonzero) digits is 52920000, while the sum is 61.

The spelling of 557716665508 in words is "five hundred fifty-seven billion, seven hundred sixteen million, six hundred sixty-five thousand, five hundred eight".