74044940545 has 12 divisors (see below), whose sum is σ = 88925240124. Its totient is φ = 59188440960.

The previous prime is 74044940531. The next prime is 74044940551. The reversal of 74044940545 is 54504944047.

It is a Cunningham number, because it is equal to 272112²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 1 + 74044940544 = 1^2 + 272112^2 .

It is not a de Polignac number, because 74044940545 - 2³⁵ = 39685202177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74044940495 and 74044940504.

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, 28249335 + ... + 28251955.

It is an arithmetic number, because the mean of its divisors is an integer number (7410436677).

Almost surely, 2^74044940545 is an apocalyptic number.

It is an amenable number.

74044940545 is a deficient number, since it is larger than the sum of its proper divisors (14880299579).

74044940545 is an frugal number, since it uses more digits than its factorization.

74044940545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7380 (or 5003 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 46.

The spelling of 74044940545 in words is "seventy-four billion, forty-four million, nine hundred forty thousand, five hundred forty-five".