71754561634 has 16 divisors (see below), whose sum is σ = 123308582400. Its totient is φ = 30676764384.

The previous prime is 71754561631. The next prime is 71754561709. The reversal of 71754561634 is 43616545717.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (71754561631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6259954 + ... + 6271405.

It is an arithmetic number, because the mean of its divisors is an integer number (7706786400).

Almost surely, 2^71754561634 is an apocalyptic number.

71754561634 is a deficient number, since it is larger than the sum of its proper divisors (51554020766).

71754561634 is a wasteful number, since it uses less digits than its factorization.

71754561634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12531777.

The product of its digits is 2116800, while the sum is 49.

The spelling of 71754561634 in words is "seventy-one billion, seven hundred fifty-four million, five hundred sixty-one thousand, six hundred thirty-four".