21650614010551 has 8 divisors (see below), whose sum is σ = 22743568850400. Its totient is φ = 20570294487072.

The previous prime is 21650614010521. The next prime is 21650614010603. The reversal of 21650614010551 is 15501041605612.

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 21650614010551 - 2⁷ = 21650614010423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21650614010551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21650614010521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3158825580 + ... + 3158832433.

It is an arithmetic number, because the mean of its divisors is an integer number (2842946106300).

Almost surely, 2^{21650614010551} is an apocalyptic number.

21650614010551 is a deficient number, since it is larger than the sum of its proper divisors (1092954839849).

21650614010551 is a wasteful number, since it uses less digits than its factorization.

21650614010551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6317658185.

The product of its (nonzero) digits is 36000, while the sum is 37.

The spelling of 21650614010551 in words is "twenty-one trillion, six hundred fifty billion, six hundred fourteen million, ten thousand, five hundred fifty-one".