111448937761919 has 16 divisors (see below), whose sum is σ = 112691730408960. Its totient is φ = 110214917991360.

The previous prime is 111448937761891. The next prime is 111448937761937. The reversal of 111448937761919 is 919167739844111.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111448937761919 is a prime.

It is a super-2 number, since 2×111448937761919² (a number of 29 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 (111448937761979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20628092 + ... + 25464014.

It is an arithmetic number, because the mean of its divisors is an integer number (7043233150560).

Almost surely, 2^{111448937761919} is an apocalyptic number.

111448937761919 is a deficient number, since it is larger than the sum of its proper divisors (1242792647041).

111448937761919 is a wasteful number, since it uses less digits than its factorization.

111448937761919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4836830.

The product of its digits is 82301184, while the sum is 71.

The spelling of 111448937761919 in words is "one hundred eleven trillion, four hundred forty-eight billion, nine hundred thirty-seven million, seven hundred sixty-one thousand, nine hundred nineteen".