72151465508 has 24 divisors (see below), whose sum is σ = 128969162112. Its totient is φ = 35303343264.

The previous prime is 72151465493. The next prime is 72151465531. The reversal of 72151465508 is 80556415127.

It is a super-2 number, since 2×72151465508² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1633166 + ... + 1676762.

It is an arithmetic number, because the mean of its divisors is an integer number (5373715088).

Almost surely, 2^72151465508 is an apocalyptic number.

It is an amenable number.

72151465508 is a deficient number, since it is larger than the sum of its proper divisors (56817696604).

72151465508 is a wasteful number, since it uses less digits than its factorization.

72151465508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52451 (or 52449 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 44.

The spelling of 72151465508 in words is "seventy-two billion, one hundred fifty-one million, four hundred sixty-five thousand, five hundred eight".