77531032459 has 2 divisors, whose sum is σ = 77531032460. Its totient is φ = 77531032458.

The previous prime is 77531032429. The next prime is 77531032471. The reversal of 77531032459 is 95423013577.

It is a strong prime.

It is an emirp because it is prime and its reverse (95423013577) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77531032459 - 2²³ = 77522643851 is a prime.

It is a super-2 number, since 2×77531032459² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (77531032429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38765516229 + 38765516230.

It is an arithmetic number, because the mean of its divisors is an integer number (38765516230).

Almost surely, 2^77531032459 is an apocalyptic number.

77531032459 is a deficient number, since it is larger than the sum of its proper divisors (1).

77531032459 is an equidigital number, since it uses as much as digits as its factorization.

77531032459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 793800, while the sum is 46.

The spelling of 77531032459 in words is "seventy-seven billion, five hundred thirty-one million, thirty-two thousand, four hundred fifty-nine".