399816130561 has 8 divisors (see below), whose sum is σ = 402885445248. Its totient is φ = 396747078000.

The previous prime is 399816130547. The next prime is 399816130573. The reversal of 399816130561 is 165031618993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 399816130561 - 2²⁹ = 399279259649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 399816130499 and 399816130508.

It is not an unprimeable number, because it can be changed into a prime (399816130591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3924376 + ... + 4024966.

It is an arithmetic number, because the mean of its divisors is an integer number (50360680656).

Almost surely, 2^399816130561 is an apocalyptic number.

It is an amenable number.

399816130561 is a deficient number, since it is larger than the sum of its proper divisors (3069314687).

399816130561 is a wasteful number, since it uses less digits than its factorization.

399816130561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131063.

The product of its (nonzero) digits is 1049760, while the sum is 52.

The spelling of 399816130561 in words is "three hundred ninety-nine billion, eight hundred sixteen million, one hundred thirty thousand, five hundred sixty-one".