11430815851 has 16 divisors (see below), whose sum is σ = 14075857600. Its totient is φ = 9039558528.

The previous prime is 11430815843. The next prime is 11430815857. The reversal of 11430815851 is 15851803411.

It is not a de Polignac number, because 11430815851 - 2³ = 11430815843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11430815851.

It is not an unprimeable number, because it can be changed into a prime (11430815857) 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, 153685 + ... + 215593.

It is an arithmetic number, because the mean of its divisors is an integer number (879741100).

Almost surely, 2^11430815851 is an apocalyptic number.

11430815851 is a deficient number, since it is larger than the sum of its proper divisors (2645041749).

11430815851 is a wasteful number, since it uses less digits than its factorization.

11430815851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63958.

The product of its (nonzero) digits is 19200, while the sum is 37.

The spelling of 11430815851 in words is "eleven billion, four hundred thirty million, eight hundred fifteen thousand, eight hundred fifty-one".