11742198623 has 4 divisors (see below), whose sum is σ = 11827908240. Its totient is φ = 11656489008.

The previous prime is 11742198613. The next prime is 11742198653. The reversal of 11742198623 is 32689124711.

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 11742198623 - 2²⁶ = 11675089759 is a prime.

It is a super-2 number, since 2×11742198623² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11742198613) 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, 42854603 + ... + 42854876.

It is an arithmetic number, because the mean of its divisors is an integer number (2956977060).

Almost surely, 2^11742198623 is an apocalyptic number.

11742198623 is a deficient number, since it is larger than the sum of its proper divisors (85709617).

11742198623 is an equidigital number, since it uses as much as digits as its factorization.

11742198623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85709616.

The product of its digits is 145152, while the sum is 44.

The spelling of 11742198623 in words is "eleven billion, seven hundred forty-two million, one hundred ninety-eight thousand, six hundred twenty-three".