516402400385 has 8 divisors (see below), whose sum is σ = 621317929920. Its totient is φ = 412031887344.

The previous prime is 516402400373. The next prime is 516402400453. The reversal of 516402400385 is 583004204615.

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 516402400385 - 2²² = 516398206081 is a prime.

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, 136252037 + ... + 136255826.

It is an arithmetic number, because the mean of its divisors is an integer number (77664741240).

Almost surely, 2^516402400385 is an apocalyptic number.

It is an amenable number.

516402400385 is a deficient number, since it is larger than the sum of its proper divisors (104915529535).

516402400385 is a wasteful number, since it uses less digits than its factorization.

516402400385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272508247.

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 516402400385 in words is "five hundred sixteen billion, four hundred two million, four hundred thousand, three hundred eighty-five".