23140156545 has 40 divisors (see below), whose sum is σ = 45251870400. Its totient is φ = 11219467680.

The previous prime is 23140156541. The next prime is 23140156547. The reversal of 23140156545 is 54565104132.

23140156545 is a `hidden beast` number, since 23 + 1 + 40 + 1 + 56 + 545 = 666.

It is not a de Polignac number, because 23140156545 - 2² = 23140156541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23140156541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2592645 + ... + 2601554.

It is an arithmetic number, because the mean of its divisors is an integer number (1131296760).

Almost surely, 2^23140156545 is an apocalyptic number.

It is an amenable number.

23140156545 is a deficient number, since it is larger than the sum of its proper divisors (22111713855).

23140156545 is a wasteful number, since it uses less digits than its factorization.

23140156545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5194227 (or 5194218 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 23140156545 in words is "twenty-three billion, one hundred forty million, one hundred fifty-six thousand, five hundred forty-five".