11429155491 has 24 divisors (see below), whose sum is σ = 16733730816. Its totient is φ = 6934243680.

The previous prime is 11429155427. The next prime is 11429155499. The reversal of 11429155491 is 19455192411.

It is not a de Polignac number, because 11429155491 - 2⁶ = 11429155427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11429155499) 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, 122755 + ... + 194748.

It is an arithmetic number, because the mean of its divisors is an integer number (697238784).

Almost surely, 2^11429155491 is an apocalyptic number.

11429155491 is a deficient number, since it is larger than the sum of its proper divisors (5304575325).

11429155491 is a wasteful number, since it uses less digits than its factorization.

11429155491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317603 (or 317590 counting only the distinct ones).

The product of its digits is 64800, while the sum is 42.

The spelling of 11429155491 in words is "eleven billion, four hundred twenty-nine million, one hundred fifty-five thousand, four hundred ninety-one".