6180947811621 has 32 divisors (see below), whose sum is σ = 10000673049600. Its totient is φ = 3741805560240.

The previous prime is 6180947811551. The next prime is 6180947811641. The reversal of 6180947811621 is 1261187490816.

6180947811621 is a `hidden beast` number, since 6 + 1 + 8 + 0 + 9 + 4 + 7 + 8 + 1 + 1 + 621 = 666.

It is not a de Polignac number, because 6180947811621 - 2⁹ = 6180947811109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6180947811641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11467831 + ... + 11994708.

It is an arithmetic number, because the mean of its divisors is an integer number (312521032800).

Almost surely, 2^{6180947811621} is an apocalyptic number.

It is an amenable number.

6180947811621 is a deficient number, since it is larger than the sum of its proper divisors (3819725237979).

6180947811621 is a wasteful number, since it uses less digits than its factorization.

6180947811621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23463446 (or 23463440 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 54.

The spelling of 6180947811621 in words is "six trillion, one hundred eighty billion, nine hundred forty-seven million, eight hundred eleven thousand, six hundred twenty-one".