74643347172 has 24 divisors (see below), whose sum is σ = 174226872736. Its totient is φ = 24872678208.

The previous prime is 74643347153. The next prime is 74643347197. The reversal of 74643347172 is 27174334647.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1017778 + ... + 1088649.

Almost surely, 2^74643347172 is an apocalyptic number.

It is an amenable number.

74643347172 is an abundant number, since it is smaller than the sum of its proper divisors (99583525564).

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

74643347172 is a wasteful number, since it uses less digits than its factorization.

74643347172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2109387 (or 2109385 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 48.

The spelling of 74643347172 in words is "seventy-four billion, six hundred forty-three million, three hundred forty-seven thousand, one hundred seventy-two".