77532276979 has 2 divisors, whose sum is σ = 77532276980. Its totient is φ = 77532276978.

The previous prime is 77532276967. The next prime is 77532277037. The reversal of 77532276979 is 97967223577.

It is a weak prime.

It is an emirp because it is prime and its reverse (97967223577) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77532276979 - 2⁵ = 77532276947 is a prime.

It is a super-2 number, since 2×77532276979² (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 77532276979.

It is not a weakly prime, because it can be changed into another prime (77532276779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38766138489 + 38766138490.

It is an arithmetic number, because the mean of its divisors is an integer number (38766138490).

Almost surely, 2^77532276979 is an apocalyptic number.

77532276979 is a deficient number, since it is larger than the sum of its proper divisors (1).

77532276979 is an equidigital number, since it uses as much as digits as its factorization.

77532276979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70013160, while the sum is 64.

The spelling of 77532276979 in words is "seventy-seven billion, five hundred thirty-two million, two hundred seventy-six thousand, nine hundred seventy-nine".