902381315621 has 16 divisors (see below), whose sum is σ = 937102521600. Its totient is φ = 868289510400.

The previous prime is 902381315587. The next prime is 902381315651. The reversal of 902381315621 is 126513183209.

It is a cyclic number.

It is not a de Polignac number, because 902381315621 - 2⁶ = 902381315557 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (902381315651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2859086 + ... + 3158976.

It is an arithmetic number, because the mean of its divisors is an integer number (58568907600).

Almost surely, 2^902381315621 is an apocalyptic number.

It is an amenable number.

902381315621 is a deficient number, since it is larger than the sum of its proper divisors (34721205979).

902381315621 is a wasteful number, since it uses less digits than its factorization.

902381315621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300940.

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 902381315621 in words is "nine hundred two billion, three hundred eighty-one million, three hundred fifteen thousand, six hundred twenty-one".