11257505767 has 4 divisors (see below), whose sum is σ = 11400005920. Its totient is φ = 11115005616.

The previous prime is 11257505759. The next prime is 11257505773. The reversal of 11257505767 is 76750575211.

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 11257505767 - 2³ = 11257505759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11257505747) 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, 71249958 + ... + 71250115.

It is an arithmetic number, because the mean of its divisors is an integer number (2850001480).

Almost surely, 2^11257505767 is an apocalyptic number.

11257505767 is a deficient number, since it is larger than the sum of its proper divisors (142500153).

11257505767 is an equidigital number, since it uses as much as digits as its factorization.

11257505767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142500152.

The product of its (nonzero) digits is 514500, while the sum is 46.

The spelling of 11257505767 in words is "eleven billion, two hundred fifty-seven million, five hundred five thousand, seven hundred sixty-seven".