11157193947 has 16 divisors (see below), whose sum is σ = 15526291968. Its totient is φ = 7113247680.

The previous prime is 11157193933. The next prime is 11157193981. The reversal of 11157193947 is 74939175111.

It is not a de Polignac number, because 11157193947 - 2¹⁹ = 11156669659 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11157193896 and 11157193905.

It is not an unprimeable number, because it can be changed into a prime (11157193447) 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, 385047 + ... + 413007.

It is an arithmetic number, because the mean of its divisors is an integer number (970393248).

Almost surely, 2^11157193947 is an apocalyptic number.

11157193947 is a deficient number, since it is larger than the sum of its proper divisors (4369098021).

11157193947 is a wasteful number, since it uses less digits than its factorization.

11157193947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33770.

The product of its digits is 238140, while the sum is 48.

The spelling of 11157193947 in words is "eleven billion, one hundred fifty-seven million, one hundred ninety-three thousand, nine hundred forty-seven".