74934818450 has 18 divisors (see below), whose sum is σ = 139382362719. Its totient is φ = 29973153120.

The previous prime is 74934818437. The next prime is 74934818477. The reversal of 74934818450 is 5481843947.

It can be written as a sum of positive squares in 5 ways, for example, as 52254759649 + 22680058801 = 228593^2 + 150599^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=193565.

It is a super-2 number, since 2×74934818450² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 74934818392 and 74934818401.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1916294 + ... + 1955006.

Almost surely, 2^74934818450 is an apocalyptic number.

74934818450 is a deficient number, since it is larger than the sum of its proper divisors (64447544269).

74934818450 is an frugal number, since it uses more digits than its factorization.

74934818450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77438 (or 38720 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 74934818450 in words is "seventy-four billion, nine hundred thirty-four million, eight hundred eighteen thousand, four hundred fifty".