21557451714000 has 80 divisors (see below), whose sum is σ = 69501224345280. Its totient is φ = 5748653788800.

The previous prime is 21557451713989. The next prime is 21557451714011. The reversal of 21557451714000 is 41715475512.

It is an interprime number because it is at equal distance from previous prime (21557451713989) and next prime (21557451714011).

It is a tau number, because it is divible by the number of its divisors (80).

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, 1796448310 + ... + 1796460309.

It is an arithmetic number, because the mean of its divisors is an integer number (868765304316).

Almost surely, 2^{21557451714000} is an apocalyptic number.

21557451714000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21557451714000 is an abundant number, since it is smaller than the sum of its proper divisors (47943772631280).

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

21557451714000 is a wasteful number, since it uses less digits than its factorization.

21557451714000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3592908645 (or 3592908629 counting only the distinct ones).

The product of its (nonzero) digits is 196000, while the sum is 42.

The spelling of 21557451714000 in words is "twenty-one trillion, five hundred fifty-seven billion, four hundred fifty-one million, seven hundred fourteen thousand".