7221507142864 has 40 divisors (see below), whose sum is σ = 16016565866240. Its totient is φ = 3089882775168.

The previous prime is 7221507142849. The next prime is 7221507142891. The reversal of 7221507142864 is 4682417051227.

It is a super-2 number, since 2×7221507142864² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52523304 + ... + 52660615.

It is an arithmetic number, because the mean of its divisors is an integer number (400414146656).

Almost surely, 2^{7221507142864} is an apocalyptic number.

It is an amenable number.

7221507142864 is an abundant number, since it is smaller than the sum of its proper divisors (8795058723376).

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

7221507142864 is a wasteful number, since it uses less digits than its factorization.

7221507142864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105184547 (or 105184541 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 49.

The spelling of 7221507142864 in words is "seven trillion, two hundred twenty-one billion, five hundred seven million, one hundred forty-two thousand, eight hundred sixty-four".