84157260531 has 16 divisors (see below), whose sum is σ = 113713036800. Its totient is φ = 55357471008.

The previous prime is 84157260527. The next prime is 84157260553. The reversal of 84157260531 is 13506275148.

It is a happy number.

It is not a de Polignac number, because 84157260531 - 2² = 84157260527 is a prime.

It is a super-2 number, since 2×84157260531² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84157260331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 460261 + ... + 616566.

It is an arithmetic number, because the mean of its divisors is an integer number (7107064800).

Almost surely, 2^84157260531 is an apocalyptic number.

84157260531 is a deficient number, since it is larger than the sum of its proper divisors (29555776269).

84157260531 is a wasteful number, since it uses less digits than its factorization.

84157260531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077178.

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 84157260531 in words is "eighty-four billion, one hundred fifty-seven million, two hundred sixty thousand, five hundred thirty-one".