53909434072715 has 32 divisors (see below), whose sum is σ = 71554225142400. Its totient is φ = 38732071117824.

The previous prime is 53909434072673. The next prime is 53909434072721. The reversal of 53909434072715 is 51727043490935.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53909434072715 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46193711 + ... + 47346359.

It is an arithmetic number, because the mean of its divisors is an integer number (2236069535700).

Almost surely, 2^{53909434072715} is an apocalyptic number.

53909434072715 is a deficient number, since it is larger than the sum of its proper divisors (17644791069685).

53909434072715 is a wasteful number, since it uses less digits than its factorization.

53909434072715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172151.

The product of its (nonzero) digits is 28576800, while the sum is 59.

The spelling of 53909434072715 in words is "fifty-three trillion, nine hundred nine billion, four hundred thirty-four million, seventy-two thousand, seven hundred fifteen".