4039557865816 has 16 divisors (see below), whose sum is σ = 8262731998440. Its totient is φ = 1836162666240.

The previous prime is 4039557865787. The next prime is 4039557865817. The reversal of 4039557865816 is 6185687559304.

It is a super-2 number, since 2×4039557865816² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4039557865817) 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, 22952033241 + ... + 22952033416.

Almost surely, 2^{4039557865816} is an apocalyptic number.

It is an amenable number.

4039557865816 is an abundant number, since it is smaller than the sum of its proper divisors (4223174132624).

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

4039557865816 is a wasteful number, since it uses less digits than its factorization.

4039557865816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45904066674 (or 45904066670 counting only the distinct ones).

The product of its (nonzero) digits is 217728000, while the sum is 67.

The spelling of 4039557865816 in words is "four trillion, thirty-nine billion, five hundred fifty-seven million, eight hundred sixty-five thousand, eight hundred sixteen".