23178206545 has 16 divisors (see below), whose sum is σ = 29959759872. Its totient is φ = 17112565440.

The previous prime is 23178206497. The next prime is 23178206563. The reversal of 23178206545 is 54560287132.

It is not a de Polignac number, because 23178206545 - 2²¹ = 23176109393 is a prime.

It is a Duffinian number.

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, 291000 + ... + 361990.

It is an arithmetic number, because the mean of its divisors is an integer number (1872484992).

Almost surely, 2^23178206545 is an apocalyptic number.

It is an amenable number.

23178206545 is a deficient number, since it is larger than the sum of its proper divisors (6781553327).

23178206545 is a wasteful number, since it uses less digits than its factorization.

23178206545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76032.

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 23178206545 in words is "twenty-three billion, one hundred seventy-eight million, two hundred six thousand, five hundred forty-five".