23678450643 has 16 divisors (see below), whose sum is σ = 31858968960. Its totient is φ = 15641856384.

The previous prime is 23678450641. The next prime is 23678450687. The reversal of 23678450643 is 34605487632.

It is not a de Polignac number, because 23678450643 - 2¹ = 23678450641 is a prime.

It is a super-2 number, since 2×23678450643² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23678450592 and 23678450601.

It is not an unprimeable number, because it can be changed into a prime (23678450641) 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 15 ways as a sum of consecutive naturals, for example, 1852368 + ... + 1865106.

It is an arithmetic number, because the mean of its divisors is an integer number (1991185560).

Almost surely, 2^23678450643 is an apocalyptic number.

23678450643 is a deficient number, since it is larger than the sum of its proper divisors (8180518317).

23678450643 is a wasteful number, since it uses less digits than its factorization.

23678450643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18338.

The product of its (nonzero) digits is 2903040, while the sum is 48.

The spelling of 23678450643 in words is "twenty-three billion, six hundred seventy-eight million, four hundred fifty thousand, six hundred forty-three".