11395857879 has 24 divisors (see below), whose sum is σ = 18818916480. Its totient is φ = 6509597328.

The previous prime is 11395857853. The next prime is 11395857881. The reversal of 11395857879 is 97875859311.

11395857879 is a `hidden beast` number, since 1 + 1 + 3 + 9 + 58 + 578 + 7 + 9 = 666.

It is not a de Polignac number, because 11395857879 - 2⁷ = 11395857751 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11395857079) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154384 + ... + 215930.

It is an arithmetic number, because the mean of its divisors is an integer number (784121520).

Almost surely, 2^11395857879 is an apocalyptic number.

11395857879 is a deficient number, since it is larger than the sum of its proper divisors (7423058601).

11395857879 is a wasteful number, since it uses less digits than its factorization.

11395857879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64499 (or 64496 counting only the distinct ones).

The product of its digits is 19051200, while the sum is 63.

The spelling of 11395857879 in words is "eleven billion, three hundred ninety-five million, eight hundred fifty-seven thousand, eight hundred seventy-nine".