77215002434131 has 2 divisors, whose sum is σ = 77215002434132. Its totient is φ = 77215002434130.

The previous prime is 77215002434047. The next prime is 77215002434149. The reversal of 77215002434131 is 13143420051277.

It is a strong prime.

It is an emirp because it is prime and its reverse (13143420051277) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77215002434131 - 2²¹ = 77215000336979 is a prime.

It is a super-2 number, since 2×77215002434131² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (77215002404131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38607501217065 + 38607501217066.

It is an arithmetic number, because the mean of its divisors is an integer number (38607501217066).

Almost surely, 2^{77215002434131} is an apocalyptic number.

77215002434131 is a deficient number, since it is larger than the sum of its proper divisors (1).

77215002434131 is an equidigital number, since it uses as much as digits as its factorization.

77215002434131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 77215002434131 in words is "seventy-seven trillion, two hundred fifteen billion, two million, four hundred thirty-four thousand, one hundred thirty-one".