21038375076 has 12 divisors (see below), whose sum is σ = 49089541872. Its totient is φ = 7012791688.

The previous prime is 21038375053. The next prime is 21038375089. The reversal of 21038375076 is 67057383012.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×21038375076² (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 3 ways as a sum of consecutive naturals, for example, 876598950 + ... + 876598973.

It is an arithmetic number, because the mean of its divisors is an integer number (4090795156).

Almost surely, 2^21038375076 is an apocalyptic number.

It is an amenable number.

21038375076 is an abundant number, since it is smaller than the sum of its proper divisors (28051166796).

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

21038375076 is a wasteful number, since it uses less digits than its factorization.

21038375076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753197930 (or 1753197928 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 42.

The spelling of 21038375076 in words is "twenty-one billion, thirty-eight million, three hundred seventy-five thousand, seventy-six".