6318751325621 has 16 divisors (see below), whose sum is σ = 7393233707904. Its totient is φ = 5287351555584.

The previous prime is 6318751325597. The next prime is 6318751325641. The reversal of 6318751325621 is 1265231578136.

It is not a de Polignac number, because 6318751325621 - 2¹⁴ = 6318751309237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6318751325621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6318751325641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4910996 + ... + 6062621.

It is an arithmetic number, because the mean of its divisors is an integer number (462077106744).

Almost surely, 2^{6318751325621} is an apocalyptic number.

It is an amenable number.

6318751325621 is a deficient number, since it is larger than the sum of its proper divisors (1074482382283).

6318751325621 is a wasteful number, since it uses less digits than its factorization.

6318751325621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10975580.

The product of its digits is 1814400, while the sum is 50.

The spelling of 6318751325621 in words is "six trillion, three hundred eighteen billion, seven hundred fifty-one million, three hundred twenty-five thousand, six hundred twenty-one".