23816145639 has 64 divisors (see below), whose sum is σ = 38979376128. Its totient is φ = 12727756800.

The previous prime is 23816145611. The next prime is 23816145697. The reversal of 23816145639 is 93654161832.

It is not a de Polignac number, because 23816145639 - 2⁷ = 23816145511 is a prime.

It is a super-3 number, since 3×23816145639³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23816145739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12796569 + ... + 12798429.

It is an arithmetic number, because the mean of its divisors is an integer number (609052752).

Almost surely, 2^23816145639 is an apocalyptic number.

23816145639 is a deficient number, since it is larger than the sum of its proper divisors (15163230489).

23816145639 is a wasteful number, since it uses less digits than its factorization.

23816145639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3208.

The product of its digits is 933120, while the sum is 48.

The spelling of 23816145639 in words is "twenty-three billion, eight hundred sixteen million, one hundred forty-five thousand, six hundred thirty-nine".