21038377410 has 48 divisors (see below), whose sum is σ = 56585987640. Its totient is φ = 5416776960.

The previous prime is 21038377391. The next prime is 21038377483. The reversal of 21038377410 is 1477383012.

21038377410 is a `hidden beast` number, since 210 + 38 + 377 + 41 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 18925780041 + 2112597369 = 137571^2 + 45963^2 .

It is a super-2 number, since 2×21038377410² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4027731 + ... + 4032950.

Almost surely, 2^21038377410 is an apocalyptic number.

21038377410 is an abundant number, since it is smaller than the sum of its proper divisors (35547610230).

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

21038377410 is a wasteful number, since it uses less digits than its factorization.

21038377410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8060723 (or 8060720 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The spelling of 21038377410 in words is "twenty-one billion, thirty-eight million, three hundred seventy-seven thousand, four hundred ten".