21470017455454 has 32 divisors (see below), whose sum is σ = 34414534139040. Its totient is φ = 10010188403712.

The previous prime is 21470017455431. The next prime is 21470017455511. The reversal of 21470017455454 is 45455471007412.

It is a super-2 number, since 2×21470017455454² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21470017455398 and 21470017455407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58828722 + ... + 59192554.

It is an arithmetic number, because the mean of its divisors is an integer number (1075454191845).

Almost surely, 2^{21470017455454} is an apocalyptic number.

21470017455454 is a deficient number, since it is larger than the sum of its proper divisors (12944516683586).

21470017455454 is a wasteful number, since it uses less digits than its factorization.

21470017455454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379884.

The product of its (nonzero) digits is 3136000, while the sum is 49.

The spelling of 21470017455454 in words is "twenty-one trillion, four hundred seventy billion, seventeen million, four hundred fifty-five thousand, four hundred fifty-four".