338856963993 has 6 divisors (see below), whose sum is σ = 489460059114. Its totient is φ = 225904642656.

The previous prime is 338856963983. The next prime is 338856964001. The reversal of 338856963993 is 399369658833.

It can be written as a sum of positive squares in only one way, i.e., 261844053849 + 77012910144 = 511707^2 + 277512^2 .

It is not a de Polignac number, because 338856963993 - 2⁵ = 338856963961 is a prime.

It is a super-2 number, since 2×338856963993² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (338856963923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18825386880 + ... + 18825386897.

It is an arithmetic number, because the mean of its divisors is an integer number (81576676519).

Almost surely, 2^338856963993 is an apocalyptic number.

It is an amenable number.

338856963993 is a deficient number, since it is larger than the sum of its proper divisors (150603095121).

338856963993 is a wasteful number, since it uses less digits than its factorization.

338856963993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37650773783 (or 37650773780 counting only the distinct ones).

The product of its digits is 680244480, while the sum is 72.

The spelling of 338856963993 in words is "three hundred thirty-eight billion, eight hundred fifty-six million, nine hundred sixty-three thousand, nine hundred ninety-three".