77693154693 has 32 divisors (see below), whose sum is σ = 132155814912. Its totient is φ = 39421468800.

The previous prime is 77693154691. The next prime is 77693154739. The reversal of 77693154693 is 39645139677.

It is a happy number.

It is not a de Polignac number, because 77693154693 - 2¹ = 77693154691 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77693154691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3900928 + ... + 3920793.

It is an arithmetic number, because the mean of its divisors is an integer number (4129869216).

Almost surely, 2^77693154693 is an apocalyptic number.

It is an amenable number.

77693154693 is a deficient number, since it is larger than the sum of its proper divisors (54462660219).

77693154693 is a wasteful number, since it uses less digits than its factorization.

77693154693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7821785.

The product of its digits is 25719120, while the sum is 60.

The spelling of 77693154693 in words is "seventy-seven billion, six hundred ninety-three million, one hundred fifty-four thousand, six hundred ninety-three".