71027760257691 has 16 divisors (see below), whose sum is σ = 96720272223744. Its totient is φ = 46343577981024.

The previous prime is 71027760257677. The next prime is 71027760257723. The reversal of 71027760257691 is 19675206772017.

It is not a de Polignac number, because 71027760257691 - 2⁶ = 71027760257627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71027760257611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4290180 + ... + 12667326.

It is an arithmetic number, because the mean of its divisors is an integer number (6045017013984).

Almost surely, 2^{71027760257691} is an apocalyptic number.

71027760257691 is a deficient number, since it is larger than the sum of its proper divisors (25692511966053).

71027760257691 is a wasteful number, since it uses less digits than its factorization.

71027760257691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8437330.

The product of its (nonzero) digits is 15558480, while the sum is 60.

The spelling of 71027760257691 in words is "seventy-one trillion, twenty-seven billion, seven hundred sixty million, two hundred fifty-seven thousand, six hundred ninety-one".