21459019570145 has 8 divisors (see below), whose sum is σ = 25750851310656. Its totient is φ = 17167197105136.

The previous prime is 21459019570139. The next prime is 21459019570151. The reversal of 21459019570145 is 54107591095412.

It is an interprime number because it is at equal distance from previous prime (21459019570139) and next prime (21459019570151).

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 21459019570145 - 2⁴ = 21459019570129 is a prime.

It is a super-2 number, since 2×21459019570145² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4704974 + ... + 8065656.

It is an arithmetic number, because the mean of its divisors is an integer number (3218856413832).

Almost surely, 2^{21459019570145} is an apocalyptic number.

It is an amenable number.

21459019570145 is a deficient number, since it is larger than the sum of its proper divisors (4291831740511).

21459019570145 is a wasteful number, since it uses less digits than its factorization.

21459019570145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4637751.

The product of its (nonzero) digits is 2268000, while the sum is 53.

The spelling of 21459019570145 in words is "twenty-one trillion, four hundred fifty-nine billion, nineteen million, five hundred seventy thousand, one hundred forty-five".