7215793578642 has 32 divisors (see below), whose sum is σ = 15744387144960. Its totient is φ = 2186487792720.

The previous prime is 7215793578629. The next prime is 7215793578673. The reversal of 7215793578642 is 2468753975127.

It is a super-2 number, since 2×7215793578642² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1653928 + ... + 4143315.

It is an arithmetic number, because the mean of its divisors is an integer number (492012098280).

Almost surely, 2^{7215793578642} is an apocalyptic number.

7215793578642 is an abundant number, since it is smaller than the sum of its proper divisors (8528593566318).

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

7215793578642 is a wasteful number, since it uses less digits than its factorization.

7215793578642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5816118.

The product of its digits is 177811200, while the sum is 66.

The spelling of 7215793578642 in words is "seven trillion, two hundred fifteen billion, seven hundred ninety-three million, five hundred seventy-eight thousand, six hundred forty-two".