23765310705505 has 16 divisors (see below), whose sum is σ = 30472951029840. Its totient is φ = 17729716948992.

The previous prime is 23765310705497. The next prime is 23765310705541. The reversal of 23765310705505 is 50550701356732.

It can be written as a sum of positive squares in 8 ways, for example, as 163436658529 + 23601874046976 = 404273^2 + 4858176^2 .

It is a cyclic number.

It is not a de Polignac number, because 23765310705505 - 2³ = 23765310705497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1282522344 + ... + 1282540873.

It is an arithmetic number, because the mean of its divisors is an integer number (1904559439365).

Almost surely, 2^{23765310705505} is an apocalyptic number.

It is an amenable number.

23765310705505 is a deficient number, since it is larger than the sum of its proper divisors (6707640324335).

23765310705505 is a wasteful number, since it uses less digits than its factorization.

23765310705505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2565063348.

The product of its (nonzero) digits is 3307500, while the sum is 49.

The spelling of 23765310705505 in words is "twenty-three trillion, seven hundred sixty-five billion, three hundred ten million, seven hundred five thousand, five hundred five".