21554610630614 has 4 divisors (see below), whose sum is σ = 32331915945924. Its totient is φ = 10777305315306.

The previous prime is 21554610630559. The next prime is 21554610630617. The reversal of 21554610630614 is 41603601645512.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21554610630617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5388652657652 + ... + 5388652657655.

It is an arithmetic number, because the mean of its divisors is an integer number (8082978986481).

Almost surely, 2^{21554610630614} is an apocalyptic number.

21554610630614 is a deficient number, since it is larger than the sum of its proper divisors (10777305315310).

21554610630614 is a wasteful number, since it uses less digits than its factorization.

21554610630614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10777305315309.

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 21554610630614 in words is "twenty-one trillion, five hundred fifty-four billion, six hundred ten million, six hundred thirty thousand, six hundred fourteen".