74420504397772 has 36 divisors (see below), whose sum is σ = 141026655238560. Its totient is φ = 34347437696832.

The previous prime is 74420504397749. The next prime is 74420504397817. The reversal of 74420504397772 is 27779340502447.

It is a happy number.

It is a super-2 number, since 2×74420504397772² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 74420504397772.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49261629 + ... + 50749867.

It is an arithmetic number, because the mean of its divisors is an integer number (3917407089960).

Almost surely, 2^{74420504397772} is an apocalyptic number.

It is an amenable number.

74420504397772 is a deficient number, since it is larger than the sum of its proper divisors (66606150840788).

74420504397772 is a wasteful number, since it uses less digits than its factorization.

74420504397772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562242 (or 1562227 counting only the distinct ones).

The product of its (nonzero) digits is 82978560, while the sum is 61.

The spelling of 74420504397772 in words is "seventy-four trillion, four hundred twenty billion, five hundred four million, three hundred ninety-seven thousand, seven hundred seventy-two".