21607689608148 has 48 divisors (see below), whose sum is σ = 57620752648704. Its totient is φ = 6173599135200.

The previous prime is 21607689608093. The next prime is 21607689608159. The reversal of 21607689608148 is 84180698670612.

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, 27760411 + ... + 28528157.

It is an arithmetic number, because the mean of its divisors is an integer number (1200432346848).

Almost surely, 2^{21607689608148} is an apocalyptic number.

21607689608148 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

21607689608148 is an abundant number, since it is smaller than the sum of its proper divisors (36013063040556).

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

21607689608148 is a wasteful number, since it uses less digits than its factorization.

21607689608148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102812 (or 1102810 counting only the distinct ones).

The product of its (nonzero) digits is 55738368, while the sum is 66.

The spelling of 21607689608148 in words is "twenty-one trillion, six hundred seven billion, six hundred eighty-nine million, six hundred eight thousand, one hundred forty-eight".