74347921658 has 8 divisors (see below), whose sum is σ = 111523039380. Its totient is φ = 37173575200.

The previous prime is 74347921603. The next prime is 74347921733. The reversal of 74347921658 is 85612974347.

It can be written as a sum of positive squares in 2 ways, for example, as 72359386009 + 1988535649 = 268997^2 + 44593^2 .

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

It is a super-2 number, since 2×74347921658² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284438 + ... + 479166.

Almost surely, 2^74347921658 is an apocalyptic number.

74347921658 is a deficient number, since it is larger than the sum of its proper divisors (37175117722).

74347921658 is a wasteful number, since it uses less digits than its factorization.

74347921658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385632.

The product of its digits is 10160640, while the sum is 56.

The spelling of 74347921658 in words is "seventy-four billion, three hundred forty-seven million, nine hundred twenty-one thousand, six hundred fifty-eight".