1111431748557 has 32 divisors (see below), whose sum is σ = 1609092136960. Its totient is φ = 678309266880.

The previous prime is 1111431748547. The next prime is 1111431748571. The reversal of 1111431748557 is 7558471341111.

It is not a de Polignac number, because 1111431748557 - 2⁷ = 1111431748429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111431748547) 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, 13127832 + ... + 13212222.

It is an arithmetic number, because the mean of its divisors is an integer number (50284129280).

Almost surely, 2^{1111431748557} is an apocalyptic number.

It is an amenable number.

1111431748557 is a deficient number, since it is larger than the sum of its proper divisors (497660388403).

1111431748557 is a wasteful number, since it uses less digits than its factorization.

1111431748557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87193.

The product of its digits is 470400, while the sum is 48.

The spelling of 1111431748557 in words is "one trillion, one hundred eleven billion, four hundred thirty-one million, seven hundred forty-eight thousand, five hundred fifty-seven".