74457147251020 has 24 divisors (see below), whose sum is σ = 156370338154800. Its totient is φ = 29780891485632.

The previous prime is 74457147250999. The next prime is 74457147251077. The reversal of 74457147251020 is 2015274175447.

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, 122653075 + ... + 123258634.

It is an arithmetic number, because the mean of its divisors is an integer number (6515430756450).

Almost surely, 2^{74457147251020} is an apocalyptic number.

It is an amenable number.

74457147251020 is an abundant number, since it is smaller than the sum of its proper divisors (81913190903780).

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

74457147251020 is a wasteful number, since it uses less digits than its factorization.

74457147251020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245926857 (or 245926855 counting only the distinct ones).

The product of its (nonzero) digits is 2195200, while the sum is 49.

The spelling of 74457147251020 in words is "seventy-four trillion, four hundred fifty-seven billion, one hundred forty-seven million, two hundred fifty-one thousand, twenty".