74220890649 has 16 divisors (see below), whose sum is σ = 102170611200. Its totient is φ = 47876417280.

The previous prime is 74220890621. The next prime is 74220890659. The reversal of 74220890649 is 94609802247.

It is not a de Polignac number, because 74220890649 - 2⁹ = 74220890137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74220890659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 518127 + ... + 645675.

It is an arithmetic number, because the mean of its divisors is an integer number (6385663200).

Almost surely, 2^74220890649 is an apocalyptic number.

It is an amenable number.

74220890649 is a deficient number, since it is larger than the sum of its proper divisors (27949720551).

74220890649 is a wasteful number, since it uses less digits than its factorization.

74220890649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133840.

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 74220890649 in words is "seventy-four billion, two hundred twenty million, eight hundred ninety thousand, six hundred forty-nine".