23687812851 has 8 divisors (see below), whose sum is σ = 32016404880. Its totient is φ = 15575548032.

The previous prime is 23687812849. The next prime is 23687812859. The reversal of 23687812851 is 15821878632.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23687812851 - 2¹ = 23687812849 is a prime.

It is a super-2 number, since 2×23687812851² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23687812794 and 23687812803.

It is not an unprimeable number, because it can be changed into a prime (23687812859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54081546 + ... + 54081983.

It is an arithmetic number, because the mean of its divisors is an integer number (4002050610).

Almost surely, 2^23687812851 is an apocalyptic number.

23687812851 is a deficient number, since it is larger than the sum of its proper divisors (8328592029).

23687812851 is a wasteful number, since it uses less digits than its factorization.

23687812851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108163605.

The product of its digits is 1290240, while the sum is 51.

The spelling of 23687812851 in words is "twenty-three billion, six hundred eighty-seven million, eight hundred twelve thousand, eight hundred fifty-one".