72151465507 has 16 divisors (see below), whose sum is σ = 82962414720. Its totient is φ = 62058225600.

The previous prime is 72151465493. The next prime is 72151465531. The reversal of 72151465507 is 70556415127.

It is not a de Polignac number, because 72151465507 - 2¹¹ = 72151463459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72151465577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67773 + ... + 385870.

It is an arithmetic number, because the mean of its divisors is an integer number (5185150920).

Almost surely, 2^72151465507 is an apocalyptic number.

72151465507 is a deficient number, since it is larger than the sum of its proper divisors (10810949213).

72151465507 is a wasteful number, since it uses less digits than its factorization.

72151465507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454434.

The product of its (nonzero) digits is 294000, while the sum is 43.

The spelling of 72151465507 in words is "seventy-two billion, one hundred fifty-one million, four hundred sixty-five thousand, five hundred seven".