7215137878160 has 20 divisors (see below), whose sum is σ = 16775195566908. Its totient is φ = 2886055151232.

The previous prime is 7215137878141. The next prime is 7215137878187. The reversal of 7215137878160 is 618787315127.

It can be written as a sum of positive squares in 2 ways, for example, as 5557975991296 + 1657161886864 = 2357536^2 + 1287308^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 7215137878096 and 7215137878105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45094611659 + ... + 45094611818.

Almost surely, 2^{7215137878160} is an apocalyptic number.

It is an amenable number.

7215137878160 is an abundant number, since it is smaller than the sum of its proper divisors (9560057688748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7215137878160 is a wasteful number, since it uses less digits than its factorization.

7215137878160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90189223490 (or 90189223484 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 56.

The spelling of 7215137878160 in words is "seven trillion, two hundred fifteen billion, one hundred thirty-seven million, eight hundred seventy-eight thousand, one hundred sixty".