77674424634 has 96 divisors (see below), whose sum is σ = 184932611136. Its totient is φ = 24350181120.

The previous prime is 77674424623. The next prime is 77674424669. The reversal of 77674424634 is 43642447677.

77674424634 is a `hidden beast` number, since 7 + 76 + 74 + 42 + 463 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14761564 + ... + 14766824.

It is an arithmetic number, because the mean of its divisors is an integer number (1926381366).

Almost surely, 2^77674424634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77674424634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92466305568).

77674424634 is an abundant number, since it is smaller than the sum of its proper divisors (107258186502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77674424634 is a wasteful number, since it uses less digits than its factorization.

77674424634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7082 (or 7070 counting only the distinct ones).

The product of its digits is 18966528, while the sum is 54.

The spelling of 77674424634 in words is "seventy-seven billion, six hundred seventy-four million, four hundred twenty-four thousand, six hundred thirty-four".