21557713014 has 12 divisors (see below), whose sum is σ = 46708378236. Its totient is φ = 7185904332.

The previous prime is 21557713013. The next prime is 21557713019. The reversal of 21557713014 is 41031775512.

21557713014 is a `hidden beast` number, since 2 + 1 + 557 + 71 + 30 + 1 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 21557713014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21557713013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 598825344 + ... + 598825379.

It is an arithmetic number, because the mean of its divisors is an integer number (3892364853).

Almost surely, 2^21557713014 is an apocalyptic number.

21557713014 is an abundant number, since it is smaller than the sum of its proper divisors (25150665222).

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

21557713014 is a wasteful number, since it uses less digits than its factorization.

21557713014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197650731 (or 1197650728 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The spelling of 21557713014 in words is "twenty-one billion, five hundred fifty-seven million, seven hundred thirteen thousand, fourteen".