79987000531 has 2 divisors, whose sum is σ = 79987000532. Its totient is φ = 79987000530.

The previous prime is 79987000487. The next prime is 79987000549. The reversal of 79987000531 is 13500078997.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79987000531 - 2⁷ = 79987000403 is a prime.

It is a super-2 number, since 2×79987000531² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (79987000031) 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 as a sum of consecutive naturals, namely, 39993500265 + 39993500266.

It is an arithmetic number, because the mean of its divisors is an integer number (39993500266).

Almost surely, 2^79987000531 is an apocalyptic number.

79987000531 is a deficient number, since it is larger than the sum of its proper divisors (1).

79987000531 is an equidigital number, since it uses as much as digits as its factorization.

79987000531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 476280, while the sum is 49.

The spelling of 79987000531 in words is "seventy-nine billion, nine hundred eighty-seven million, five hundred thirty-one", and thus it is an aban number.