23653781385 has 32 divisors (see below), whose sum is σ = 43154778240. Its totient is φ = 10959940608.

The previous prime is 23653781353. The next prime is 23653781413. The reversal of 23653781385 is 58318735632.

It is not a de Polignac number, because 23653781385 - 2⁵ = 23653781353 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

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, 3564375 + ... + 3571004.

It is an arithmetic number, because the mean of its divisors is an integer number (1348586820).

Almost surely, 2^23653781385 is an apocalyptic number.

It is an amenable number.

23653781385 is a deficient number, since it is larger than the sum of its proper divisors (19500996855).

23653781385 is a wasteful number, since it uses less digits than its factorization.

23653781385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7135417.

The product of its digits is 3628800, while the sum is 51.

The spelling of 23653781385 in words is "twenty-three billion, six hundred fifty-three million, seven hundred eighty-one thousand, three hundred eighty-five".