21459019570146 has 32 divisors (see below), whose sum is σ = 49331079475200. Its totient is φ = 6906351125520.

The previous prime is 21459019570139. The next prime is 21459019570151. The reversal of 21459019570146 is 64107591095412.

21459019570146 is a `hidden beast` number, since 2 + 1 + 4 + 59 + 0 + 1 + 9 + 570 + 14 + 6 = 666.

It is a super-2 number, since 2×21459019570146² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 21459019570092 and 21459019570101.

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, 6851537250 + ... + 6851540381.

It is an arithmetic number, because the mean of its divisors is an integer number (1541596233600).

Almost surely, 2^{21459019570146} is an apocalyptic number.

21459019570146 is an abundant number, since it is smaller than the sum of its proper divisors (27872059905054).

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

21459019570146 is a wasteful number, since it uses less digits than its factorization.

21459019570146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13703077671 (or 13703077665 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 54.

The spelling of 21459019570146 in words is "twenty-one trillion, four hundred fifty-nine billion, nineteen million, five hundred seventy thousand, one hundred forty-six".