71542090634 has 24 divisors (see below), whose sum is σ = 124843483008. Its totient is φ = 30658480440.

The previous prime is 71542090621. The next prime is 71542090639. The reversal of 71542090634 is 43609024517.

It is a junction number, because it is equal to n+sod(n) for n = 71542090591 and 71542090600.

It is not an unprimeable number, because it can be changed into a prime (71542090639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1833977 + ... + 1872579.

It is an arithmetic number, because the mean of its divisors is an integer number (5201811792).

Almost surely, 2^71542090634 is an apocalyptic number.

71542090634 is a deficient number, since it is larger than the sum of its proper divisors (53301392374).

71542090634 is a wasteful number, since it uses less digits than its factorization.

71542090634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57530 (or 57523 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 71542090634 in words is "seventy-one billion, five hundred forty-two million, ninety thousand, six hundred thirty-four".