21507460653053 has 8 divisors (see below), whose sum is σ = 21594734878080. Its totient is φ = 21420244596960.

The previous prime is 21507460653043. The next prime is 21507460653071. The reversal of 21507460653053 is 35035606470512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21507460653053 - 2¹⁶ = 21507460587517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21507460652989 and 21507460653007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21507460653043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13801175 + ... + 15280292.

It is an arithmetic number, because the mean of its divisors is an integer number (2699341859760).

Almost surely, 2^{21507460653053} is an apocalyptic number.

It is an amenable number.

21507460653053 is a deficient number, since it is larger than the sum of its proper divisors (87274225027).

21507460653053 is a wasteful number, since it uses less digits than its factorization.

21507460653053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29084467.

The product of its (nonzero) digits is 2268000, while the sum is 47.

The spelling of 21507460653053 in words is "twenty-one trillion, five hundred seven billion, four hundred sixty million, six hundred fifty-three thousand, fifty-three".