74706777477 has 24 divisors (see below), whose sum is σ = 108186624000. Its totient is φ = 49676921568.

The previous prime is 74706777473. The next prime is 74706777493. The reversal of 74706777477 is 77477760747.

It is not a de Polignac number, because 74706777477 - 2² = 74706777473 is a prime.

It is a super-2 number, since 2×74706777477² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74706777473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5830524 + ... + 5843322.

It is an arithmetic number, because the mean of its divisors is an integer number (4507776000).

Almost surely, 2^74706777477 is an apocalyptic number.

It is an amenable number.

74706777477 is a deficient number, since it is larger than the sum of its proper divisors (33479846523).

74706777477 is a wasteful number, since it uses less digits than its factorization.

74706777477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14417 (or 14414 counting only the distinct ones).

The product of its (nonzero) digits is 79060128, while the sum is 63.

The spelling of 74706777477 in words is "seventy-four billion, seven hundred six million, seven hundred seventy-seven thousand, four hundred seventy-seven".