1338320023650 has 72 divisors (see below), whose sum is σ = 3692798756244. Its totient is φ = 347239785600.

The previous prime is 1338320023643. The next prime is 1338320023721. The reversal of 1338320023650 is 563200238331.

1338320023650 is a `hidden beast` number, since 1 + 3 + 383 + 200 + 23 + 6 + 50 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 582625363401 + 755694660249 = 763299^2 + 869307^2 .

It is a super-2 number, since 2×1338320023650² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 40173141 + ... + 40206440.

Almost surely, 2^{1338320023650} is an apocalyptic number.

1338320023650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1338320023650 is an abundant number, since it is smaller than the sum of its proper divisors (2354478732594).

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

1338320023650 is a wasteful number, since it uses less digits than its factorization.

1338320023650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80379636 (or 80379628 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 1338320023650 in words is "one trillion, three hundred thirty-eight billion, three hundred twenty million, twenty-three thousand, six hundred fifty".