71534950542 has 48 divisors (see below), whose sum is σ = 171119789568. Its totient is φ = 21416081040.

The previous prime is 71534950483. The next prime is 71534950547. The reversal of 71534950542 is 24505943517.

71534950542 is a `hidden beast` number, since 7 + 1 + 53 + 4 + 9 + 50 + 542 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71534950547) 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 23 ways as a sum of consecutive naturals, for example, 2159998 + ... + 2192865.

It is an arithmetic number, because the mean of its divisors is an integer number (3564995616).

Almost surely, 2^71534950542 is an apocalyptic number.

71534950542 is an abundant number, since it is smaller than the sum of its proper divisors (99584839026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71534950542 is a wasteful number, since it uses less digits than its factorization.

71534950542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4352965 (or 4352962 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

The spelling of 71534950542 in words is "seventy-one billion, five hundred thirty-four million, nine hundred fifty thousand, five hundred forty-two".