74790121597 has 8 divisors (see below), whose sum is σ = 75015349880. Its totient is φ = 74565100800.

The previous prime is 74790121543. The next prime is 74790121661. The reversal of 74790121597 is 79512109747.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2769811641 + 72020309956 = 52629^2 + 268366^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74790121597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74790121297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 685843 + ... + 787375.

It is an arithmetic number, because the mean of its divisors is an integer number (9376918735).

Almost surely, 2^74790121597 is an apocalyptic number.

It is an amenable number.

74790121597 is a deficient number, since it is larger than the sum of its proper divisors (225228283).

74790121597 is a wasteful number, since it uses less digits than its factorization.

74790121597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103743.

The product of its (nonzero) digits is 1111320, while the sum is 52.

The spelling of 74790121597 in words is "seventy-four billion, seven hundred ninety million, one hundred twenty-one thousand, five hundred ninety-seven".