11851405137 has 48 divisors (see below), whose sum is σ = 20783495040. Its totient is φ = 6630132960.

The previous prime is 11851405133. The next prime is 11851405171. The reversal of 11851405137 is 73150415811.

It is a happy number.

11851405137 is a `hidden beast` number, since 1 + 1 + 8 + 514 + 0 + 5 + 137 = 666.

It is not a de Polignac number, because 11851405137 - 2² = 11851405133 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11851405133) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 97053 + ... + 181994.

It is an arithmetic number, because the mean of its divisors is an integer number (432989480).

Almost surely, 2^11851405137 is an apocalyptic number.

It is an amenable number.

11851405137 is a deficient number, since it is larger than the sum of its proper divisors (8932089903).

11851405137 is a wasteful number, since it uses less digits than its factorization.

11851405137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279091 (or 279074 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 36.

The spelling of 11851405137 in words is "eleven billion, eight hundred fifty-one million, four hundred five thousand, one hundred thirty-seven".