21470071126455 has 96 divisors (see below), whose sum is σ = 43584970530816. Its totient is φ = 9572387715072.

The previous prime is 21470071126417. The next prime is 21470071126463. The reversal of 21470071126455 is 55462117007412.

21470071126455 is a `hidden beast` number, since 2 + 1 + 4 + 7 + 0 + 0 + 71 + 126 + 455 = 666.

It is not a de Polignac number, because 21470071126455 - 2¹² = 21470071122359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 21470071126455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7938154 + ... + 10293416.

It is an arithmetic number, because the mean of its divisors is an integer number (454010109696).

Almost surely, 2^{21470071126455} is an apocalyptic number.

21470071126455 is an abundant number, since it is smaller than the sum of its proper divisors (22114899404361).

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

21470071126455 is a wasteful number, since it uses less digits than its factorization.

21470071126455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2355997 (or 2355994 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 45.

The spelling of 21470071126455 in words is "twenty-one trillion, four hundred seventy billion, seventy-one million, one hundred twenty-six thousand, four hundred fifty-five".