21648747240126 has 40 divisors (see below), whose sum is σ = 48514426469784. Its totient is φ = 7215476040720.

The previous prime is 21648747240103. The next prime is 21648747240137. The reversal of 21648747240126 is 62104274784612.

21648747240126 is a `hidden beast` number, since 2 + 1 + 6 + 4 + 8 + 7 + 472 + 40 + 126 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5639860 + ... + 8666343.

Almost surely, 2^{21648747240126} is an apocalyptic number.

21648747240126 is an abundant number, since it is smaller than the sum of its proper divisors (26865679229658).

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

21648747240126 is a wasteful number, since it uses less digits than its factorization.

21648747240126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14315558 (or 14315549 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 54.

The spelling of 21648747240126 in words is "twenty-one trillion, six hundred forty-eight billion, seven hundred forty-seven million, two hundred forty thousand, one hundred twenty-six".