7215918985601 has 16 divisors (see below), whose sum is σ = 7418941831680. Its totient is φ = 7014967027200.

The previous prime is 7215918985591. The next prime is 7215918985609. The reversal of 7215918985601 is 1065898195127.

It is not a de Polignac number, because 7215918985601 - 2¹⁸ = 7215918723457 is a prime.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7215918985609) 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, 88025705 + ... + 88107641.

It is an arithmetic number, because the mean of its divisors is an integer number (463683864480).

Almost surely, 2^{7215918985601} is an apocalyptic number.

It is an amenable number.

7215918985601 is a deficient number, since it is larger than the sum of its proper divisors (203022846079).

7215918985601 is a wasteful number, since it uses less digits than its factorization.

7215918985601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94544.

The product of its (nonzero) digits is 10886400, while the sum is 62.

The spelling of 7215918985601 in words is "seven trillion, two hundred fifteen billion, nine hundred eighteen million, nine hundred eighty-five thousand, six hundred one".