11157193951 has 4 divisors (see below), whose sum is σ = 11163139992. Its totient is φ = 11151247912.

The previous prime is 11157193933. The next prime is 11157193981. The reversal of 11157193951 is 15939175111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11157193951 - 2¹⁷ = 11157062879 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11157193898 and 11157193907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11157193981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2970205 + ... + 2973958.

It is an arithmetic number, because the mean of its divisors is an integer number (2790784998).

Almost surely, 2^11157193951 is an apocalyptic number.

11157193951 is a deficient number, since it is larger than the sum of its proper divisors (5946041).

11157193951 is an equidigital number, since it uses as much as digits as its factorization.

11157193951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5946040.

The product of its digits is 42525, while the sum is 43.

The spelling of 11157193951 in words is "eleven billion, one hundred fifty-seven million, one hundred ninety-three thousand, nine hundred fifty-one".