21476522453351 has 12 divisors (see below), whose sum is σ = 24984563294880. Its totient is φ = 18407217417120.

The previous prime is 21476522453329. The next prime is 21476522453357. The reversal of 21476522453351 is 15335422567412.

It is a de Polignac number, because none of the positive numbers 2^k-21476522453351 is a prime.

It is a super-2 number, since 2×21476522453351² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21476522453351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21476522453357) 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, 13906655 + ... + 15373616.

It is an arithmetic number, because the mean of its divisors is an integer number (2082046941240).

Almost surely, 2^{21476522453351} is an apocalyptic number.

21476522453351 is a deficient number, since it is larger than the sum of its proper divisors (3508040841529).

21476522453351 is a wasteful number, since it uses less digits than its factorization.

21476522453351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29295254 (or 29295247 counting only the distinct ones).

The product of its digits is 6048000, while the sum is 50.

The spelling of 21476522453351 in words is "twenty-one trillion, four hundred seventy-six billion, five hundred twenty-two million, four hundred fifty-three thousand, three hundred fifty-one".