11423111658 has 64 divisors (see below), whose sum is σ = 27468288000. Its totient is φ = 3097773504.

The previous prime is 11423111653. The next prime is 11423111719. The reversal of 11423111658 is 85611132411.

It is a super-2 number, since 2×11423111658² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11423111653) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7618 + ... + 151341.

It is an arithmetic number, because the mean of its divisors is an integer number (429192000).

Almost surely, 2^11423111658 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11423111658, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13734144000).

11423111658 is an abundant number, since it is smaller than the sum of its proper divisors (16045176342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11423111658 is a wasteful number, since it uses less digits than its factorization.

11423111658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159059.

The product of its digits is 5760, while the sum is 33.

The spelling of 11423111658 in words is "eleven billion, four hundred twenty-three million, one hundred eleven thousand, six hundred fifty-eight".