11629198257 has 4 divisors (see below), whose sum is σ = 15505597680. Its totient is φ = 7752798836.

The previous prime is 11629198249. The next prime is 11629198271. The reversal of 11629198257 is 75289192611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11629198257 - 2³ = 11629198249 is a prime.

It is a super-2 number, since 2×11629198257² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11629178257) 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, 1938199707 + ... + 1938199712.

It is an arithmetic number, because the mean of its divisors is an integer number (3876399420).

Almost surely, 2^11629198257 is an apocalyptic number.

It is an amenable number.

11629198257 is a deficient number, since it is larger than the sum of its proper divisors (3876399423).

11629198257 is an equidigital number, since it uses as much as digits as its factorization.

11629198257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3876399422.

The product of its digits is 544320, while the sum is 51.

The spelling of 11629198257 in words is "eleven billion, six hundred twenty-nine million, one hundred ninety-eight thousand, two hundred fifty-seven".