87822716931 has 24 divisors (see below), whose sum is σ = 134540498976. Its totient is φ = 55084803840.

The previous prime is 87822716903. The next prime is 87822716963. The reversal of 87822716931 is 13961722878.

It is a happy number.

It is not a de Polignac number, because 87822716931 - 2⁵ = 87822716899 is a prime.

It is a super-2 number, since 2×87822716931² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87822716131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3464950 + ... + 3490203.

It is an arithmetic number, because the mean of its divisors is an integer number (5605854124).

Almost surely, 2^87822716931 is an apocalyptic number.

87822716931 is a deficient number, since it is larger than the sum of its proper divisors (46717782045).

87822716931 is a wasteful number, since it uses less digits than its factorization.

87822716931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6955243 (or 6955240 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The spelling of 87822716931 in words is "eighty-seven billion, eight hundred twenty-two million, seven hundred sixteen thousand, nine hundred thirty-one".