71077001377 has 16 divisors (see below), whose sum is σ = 76203303120. Its totient is φ = 66057705472.

The previous prime is 71077001363. The next prime is 71077001383. The reversal of 71077001377 is 77310077017.

It can be written as a sum of positive squares in 8 ways, for example, as 482636961 + 70594364416 = 21969^2 + 265696^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71077001377 is a prime.

It is a super-2 number, since 2×71077001377² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71077004377) 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, 1139163 + ... + 1199935.

It is an arithmetic number, because the mean of its divisors is an integer number (4762706445).

Almost surely, 2^71077001377 is an apocalyptic number.

It is an amenable number.

71077001377 is a deficient number, since it is larger than the sum of its proper divisors (5126301743).

71077001377 is a wasteful number, since it uses less digits than its factorization.

71077001377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61652.

The product of its (nonzero) digits is 50421, while the sum is 40.

The spelling of 71077001377 in words is "seventy-one billion, seventy-seven million, one thousand, three hundred seventy-seven".