7116507215621 has 4 divisors (see below), whose sum is σ = 7346071964544. Its totient is φ = 6886942466700.

The previous prime is 7116507215603. The next prime is 7116507215633. The reversal of 7116507215621 is 1265127056117.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7116507215621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7116507215641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114782374415 + ... + 114782374476.

It is an arithmetic number, because the mean of its divisors is an integer number (1836517991136).

Almost surely, 2^{7116507215621} is an apocalyptic number.

It is an amenable number.

7116507215621 is a deficient number, since it is larger than the sum of its proper divisors (229564748923).

7116507215621 is a wasteful number, since it uses less digits than its factorization.

7116507215621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229564748922.

The product of its (nonzero) digits is 176400, while the sum is 44.

The spelling of 7116507215621 in words is "seven trillion, one hundred sixteen billion, five hundred seven million, two hundred fifteen thousand, six hundred twenty-one".