11623807851 has 16 divisors (see below), whose sum is σ = 16560640800. Its totient is φ = 7226454528.

The previous prime is 11623807843. The next prime is 11623807879. The reversal of 11623807851 is 15870832611.

It is not a de Polignac number, because 11623807851 - 2³ = 11623807843 is a prime.

It is a super-2 number, since 2×11623807851² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11623807841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1039936 + ... + 1051053.

It is an arithmetic number, because the mean of its divisors is an integer number (1035040050).

Almost surely, 2^11623807851 is an apocalyptic number.

11623807851 is a deficient number, since it is larger than the sum of its proper divisors (4936832949).

11623807851 is a wasteful number, since it uses less digits than its factorization.

11623807851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2091118.

The product of its (nonzero) digits is 80640, while the sum is 42.

The spelling of 11623807851 in words is "eleven billion, six hundred twenty-three million, eight hundred seven thousand, eight hundred fifty-one".