77632734591 has 12 divisors (see below), whose sum is σ = 115753468480. Its totient is φ = 50085635040.

The previous prime is 77632734589. The next prime is 77632734593. The reversal of 77632734591 is 19543723677.

It is an interprime number because it is at equal distance from previous prime (77632734589) and next prime (77632734593).

It is not a de Polignac number, because 77632734591 - 2¹ = 77632734589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77632734593) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139126486 + ... + 139127043.

Almost surely, 2^77632734591 is an apocalyptic number.

77632734591 is a deficient number, since it is larger than the sum of its proper divisors (38120733889).

77632734591 is a wasteful number, since it uses less digits than its factorization.

77632734591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278253566 (or 278253563 counting only the distinct ones).

The product of its digits is 6667920, while the sum is 54.

The spelling of 77632734591 in words is "seventy-seven billion, six hundred thirty-two million, seven hundred thirty-four thousand, five hundred ninety-one".