77662922497 has 4 divisors (see below), whose sum is σ = 77664069376. Its totient is φ = 77661775620.

The previous prime is 77662922473. The next prime is 77662922521. The reversal of 77662922497 is 79422926677.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (77662922473) and next prime (77662922521).

It is a cyclic number.

It is not a de Polignac number, because 77662922497 - 2²⁷ = 77528704769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77662922437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 465033 + ... + 609574.

It is an arithmetic number, because the mean of its divisors is an integer number (19416017344).

Almost surely, 2^77662922497 is an apocalyptic number.

It is an amenable number.

77662922497 is a deficient number, since it is larger than the sum of its proper divisors (1146879).

77662922497 is a wasteful number, since it uses less digits than its factorization.

77662922497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146878.

The product of its digits is 32006016, while the sum is 61.

The spelling of 77662922497 in words is "seventy-seven billion, six hundred sixty-two million, nine hundred twenty-two thousand, four hundred ninety-seven".