72140756215 has 32 divisors (see below), whose sum is σ = 102319531776. Its totient is φ = 48231375360.

The previous prime is 72140756189. The next prime is 72140756257. The reversal of 72140756215 is 51265704127.

It is not a de Polignac number, because 72140756215 - 2⁹ = 72140755703 is a prime.

It is a super-2 number, since 2×72140756215² (a number of 23 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 31 ways as a sum of consecutive naturals, for example, 856957 + ... + 937366.

It is an arithmetic number, because the mean of its divisors is an integer number (3197485368).

Almost surely, 2^72140756215 is an apocalyptic number.

72140756215 is a deficient number, since it is larger than the sum of its proper divisors (30178775561).

72140756215 is a wasteful number, since it uses less digits than its factorization.

72140756215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1794399.

The product of its (nonzero) digits is 117600, while the sum is 40.

The spelling of 72140756215 in words is "seventy-two billion, one hundred forty million, seven hundred fifty-six thousand, two hundred fifteen".