11257079867 has 4 divisors (see below), whose sum is σ = 12280450776. Its totient is φ = 10233708960.

The previous prime is 11257079863. The next prime is 11257079893. The reversal of 11257079867 is 76897075211.

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 11257079867 - 2² = 11257079863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11257079863) 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, 511685438 + ... + 511685459.

It is an arithmetic number, because the mean of its divisors is an integer number (3070112694).

Almost surely, 2^11257079867 is an apocalyptic number.

11257079867 is a deficient number, since it is larger than the sum of its proper divisors (1023370909).

11257079867 is a wasteful number, since it uses less digits than its factorization.

11257079867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023370908.

The product of its (nonzero) digits is 1481760, while the sum is 53.

The spelling of 11257079867 in words is "eleven billion, two hundred fifty-seven million, seventy-nine thousand, eight hundred sixty-seven".