71660737055 has 16 divisors (see below), whose sum is σ = 88551525888. Its totient is φ = 55637472000.

The previous prime is 71660737021. The next prime is 71660737061. The reversal of 71660737055 is 55073706617.

It is not a de Polignac number, because 71660737055 - 2¹² = 71660732959 is a prime.

It is a super-2 number, since 2×71660737055² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 875936 + ... + 954245.

It is an arithmetic number, because the mean of its divisors is an integer number (5534470368).

Almost surely, 2^71660737055 is an apocalyptic number.

71660737055 is a deficient number, since it is larger than the sum of its proper divisors (16890788833).

71660737055 is a wasteful number, since it uses less digits than its factorization.

71660737055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830418.

The product of its (nonzero) digits is 926100, while the sum is 47.

The spelling of 71660737055 in words is "seventy-one billion, six hundred sixty million, seven hundred thirty-seven thousand, fifty-five".