74444456553 has 4 divisors (see below), whose sum is σ = 99259275408. Its totient is φ = 49629637700.

The previous prime is 74444456551. The next prime is 74444456561. The reversal of 74444456553 is 35565444447.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74444456553 - 2¹ = 74444456551 is a prime.

It is a super-2 number, since 2×74444456553² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 74444456496 and 74444456505.

It is not an unprimeable number, because it can be changed into a prime (74444456551) 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, 12407409423 + ... + 12407409428.

It is an arithmetic number, because the mean of its divisors is an integer number (24814818852).

Almost surely, 2^74444456553 is an apocalyptic number.

It is an amenable number.

74444456553 is a deficient number, since it is larger than the sum of its proper divisors (24814818855).

74444456553 is a wasteful number, since it uses less digits than its factorization.

74444456553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24814818854.

The product of its digits is 16128000, while the sum is 51.

The spelling of 74444456553 in words is "seventy-four billion, four hundred forty-four million, four hundred fifty-six thousand, five hundred fifty-three".