74430543550 has 24 divisors (see below), whose sum is σ = 151026340392. Its totient is φ = 27065652000.

The previous prime is 74430543533. The next prime is 74430543623. The reversal of 74430543550 is 5534503447.

It is a happy number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 67663581 + ... + 67664680.

It is an arithmetic number, because the mean of its divisors is an integer number (6292764183).

Almost surely, 2^74430543550 is an apocalyptic number.

74430543550 is an abundant number, since it is smaller than the sum of its proper divisors (76595796842).

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

74430543550 is a wasteful number, since it uses less digits than its factorization.

74430543550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135328284 (or 135328279 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 40.

The spelling of 74430543550 in words is "seventy-four billion, four hundred thirty million, five hundred forty-three thousand, five hundred fifty".