74742401780 has 48 divisors (see below), whose sum is σ = 166855973760. Its totient is φ = 28042992000.

The previous prime is 74742401753. The next prime is 74742401801. The reversal of 74742401780 is 8710424747.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 935336 + ... + 1012095.

It is an arithmetic number, because the mean of its divisors is an integer number (3476166120).

Almost surely, 2^74742401780 is an apocalyptic number.

It is an amenable number.

74742401780 is an abundant number, since it is smaller than the sum of its proper divisors (92113571980).

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

74742401780 is a wasteful number, since it uses less digits than its factorization.

74742401780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1947560 (or 1947558 counting only the distinct ones).

The product of its (nonzero) digits is 351232, while the sum is 44.

The spelling of 74742401780 in words is "seventy-four billion, seven hundred forty-two million, four hundred one thousand, seven hundred eighty".