87522396431 has 2 divisors, whose sum is σ = 87522396432. Its totient is φ = 87522396430.

The previous prime is 87522396391. The next prime is 87522396469. The reversal of 87522396431 is 13469322578.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87522396431 - 2¹⁰ = 87522395407 is a prime.

It is a super-2 number, since 2×87522396431² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87522396431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87522396631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43761198215 + 43761198216.

It is an arithmetic number, because the mean of its divisors is an integer number (43761198216).

Almost surely, 2^87522396431 is an apocalyptic number.

87522396431 is a deficient number, since it is larger than the sum of its proper divisors (1).

87522396431 is an equidigital number, since it uses as much as digits as its factorization.

87522396431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 50.

The spelling of 87522396431 in words is "eighty-seven billion, five hundred twenty-two million, three hundred ninety-six thousand, four hundred thirty-one".