21037152519278 has 128 divisors (see below), whose sum is σ = 39406592655360. Its totient is φ = 8228336244480.

The previous prime is 21037152519277. The next prime is 21037152519283. The reversal of 21037152519278 is 87291525173012.

It is a super-2 number, since 2×21037152519278² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21037152519277) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 122864675 + ... + 123035777.

It is an arithmetic number, because the mean of its divisors is an integer number (307864005120).

Almost surely, 2^{21037152519278} is an apocalyptic number.

21037152519278 is a deficient number, since it is larger than the sum of its proper divisors (18369440136082).

21037152519278 is a wasteful number, since it uses less digits than its factorization.

21037152519278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171382.

The product of its (nonzero) digits is 2116800, while the sum is 53.

The spelling of 21037152519278 in words is "twenty-one trillion, thirty-seven billion, one hundred fifty-two million, five hundred nineteen thousand, two hundred seventy-eight".