74431444770 has 24 divisors (see below), whose sum is σ = 193521756636. Its totient is φ = 19848385248.

The previous prime is 74431444741. The next prime is 74431444771. The reversal of 74431444770 is 7744413447.

74431444770 is a `hidden beast` number, since 74 + 431 + 44 + 47 + 70 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 74334205449 + 97239321 = 272643^2 + 9861^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (74431444771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 413507937 + ... + 413508116.

Almost surely, 2^74431444770 is an apocalyptic number.

74431444770 is an abundant number, since it is smaller than the sum of its proper divisors (119090311866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74431444770 is a wasteful number, since it uses less digits than its factorization.

74431444770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827016066 (or 827016063 counting only the distinct ones).

The product of its (nonzero) digits is 1053696, while the sum is 45.

The spelling of 74431444770 in words is "seventy-four billion, four hundred thirty-one million, four hundred forty-four thousand, seven hundred seventy".