74434477664 has 24 divisors (see below), whose sum is σ = 146558568240. Its totient is φ = 37213254016.

The previous prime is 74434477657. The next prime is 74434477669. The reversal of 74434477664 is 46677443447.

It is a super-2 number, since 2×74434477664² (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 (74434477669) 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, 191342 + ... + 430674.

It is an arithmetic number, because the mean of its divisors is an integer number (6106607010).

Almost surely, 2^74434477664 is an apocalyptic number.

It is an amenable number.

74434477664 is a deficient number, since it is larger than the sum of its proper divisors (72124090576).

74434477664 is a wasteful number, since it uses less digits than its factorization.

74434477664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249062 (or 249054 counting only the distinct ones).

The product of its digits is 37933056, while the sum is 56.

The spelling of 74434477664 in words is "seventy-four billion, four hundred thirty-four million, four hundred seventy-seven thousand, six hundred sixty-four".