21460053771 has 12 divisors (see below), whose sum is σ = 33382306048. Its totient is φ = 13206186864.

The previous prime is 21460053767. The next prime is 21460053793. The reversal of 21460053771 is 17735006412.

It is a happy number.

21460053771 is a `hidden beast` number, since 2 + 14 + 600 + 5 + 37 + 7 + 1 = 666.

It is not a de Polignac number, because 21460053771 - 2² = 21460053767 is a prime.

It is a super-2 number, since 2×21460053771² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21460053371) 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, 91709515 + ... + 91709748.

Almost surely, 2^21460053771 is an apocalyptic number.

21460053771 is a deficient number, since it is larger than the sum of its proper divisors (11922252277).

21460053771 is a wasteful number, since it uses less digits than its factorization.

21460053771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183419282 (or 183419279 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The spelling of 21460053771 in words is "twenty-one billion, four hundred sixty million, fifty-three thousand, seven hundred seventy-one".