722165145660 has 144 divisors (see below), whose sum is σ = 2584264230912. Its totient is φ = 159741590400.

The previous prime is 722165145649. The next prime is 722165145671. The reversal of 722165145660 is 66541561227.

722165145660 is a `hidden beast` number, since 7 + 2 + 21 + 6 + 514 + 56 + 60 = 666.

It is an interprime number because it is at equal distance from previous prime (722165145649) and next prime (722165145671).

It is a super-2 number, since 2×722165145660² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9205246 + ... + 9283365.

Almost surely, 2^722165145660 is an apocalyptic number.

722165145660 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

722165145660 is an abundant number, since it is smaller than the sum of its proper divisors (1862099085252).

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

722165145660 is a wasteful number, since it uses less digits than its factorization.

722165145660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18488664 (or 18488659 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 722165145660 in words is "seven hundred twenty-two billion, one hundred sixty-five million, one hundred forty-five thousand, six hundred sixty".