21877476753 has 12 divisors (see below), whose sum is σ = 32062859024. Its totient is φ = 13259076600.

The previous prime is 21877476739. The next prime is 21877476853. The reversal of 21877476753 is 35767477812.

It is not a de Polignac number, because 21877476753 - 2¹² = 21877472657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21877476693 and 21877476702.

It is not an unprimeable number, because it can be changed into a prime (21877476703) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30133903 + ... + 30134628.

Almost surely, 2^21877476753 is an apocalyptic number.

It is an amenable number.

21877476753 is a deficient number, since it is larger than the sum of its proper divisors (10185382271).

21877476753 is a wasteful number, since it uses less digits than its factorization.

21877476753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60268556 (or 60268545 counting only the distinct ones).

The product of its digits is 13829760, while the sum is 57.

The spelling of 21877476753 in words is "twenty-one billion, eight hundred seventy-seven million, four hundred seventy-six thousand, seven hundred fifty-three".