72130112121505 has 32 divisors (see below), whose sum is σ = 86813408371968. Its totient is φ = 57532890643200.

The previous prime is 72130112121451. The next prime is 72130112121523. The reversal of 72130112121505 is 50512121103127.

It is not a de Polignac number, because 72130112121505 - 2⁹ = 72130112120993 is a prime.

It is a Duffinian 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, 11407574274 + ... + 11407580596.

It is an arithmetic number, because the mean of its divisors is an integer number (2712919011624).

Almost surely, 2^{72130112121505} is an apocalyptic number.

It is an amenable number.

72130112121505 is a deficient number, since it is larger than the sum of its proper divisors (14683296250463).

72130112121505 is a wasteful number, since it uses less digits than its factorization.

72130112121505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11577.

The product of its (nonzero) digits is 4200, while the sum is 31.

The spelling of 72130112121505 in words is "seventy-two trillion, one hundred thirty billion, one hundred twelve million, one hundred twenty-one thousand, five hundred five".