102621207516 has 12 divisors (see below), whose sum is σ = 239449484232. Its totient is φ = 34207069168.

The previous prime is 102621207463. The next prime is 102621207517. The reversal of 102621207516 is 615702126201.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×102621207516² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102621207517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4275883635 + ... + 4275883658.

It is an arithmetic number, because the mean of its divisors is an integer number (19954123686).

Almost surely, 2^102621207516 is an apocalyptic number.

It is an amenable number.

102621207516 is an abundant number, since it is smaller than the sum of its proper divisors (136828276716).

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

102621207516 is a wasteful number, since it uses less digits than its factorization.

102621207516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8551767300 (or 8551767298 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The spelling of 102621207516 in words is "one hundred two billion, six hundred twenty-one million, two hundred seven thousand, five hundred sixteen".