1111797129555 has 192 divisors, whose sum is σ = 2315535252480. Its totient is φ = 495787682304.

The previous prime is 1111797129497. The next prime is 1111797129613. The reversal of 1111797129555 is 5559217971111.

1111797129555 is a `hidden beast` number, since 1 + 1 + 1 + 1 + 79 + 7 + 12 + 9 + 555 = 666.

It is an interprime number because it is at equal distance from previous prime (1111797129497) and next prime (1111797129613).

It is not a de Polignac number, because 1111797129555 - 2¹⁴ = 1111797113171 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 450666432 + ... + 450668898.

It is an arithmetic number, because the mean of its divisors is an integer number (12060079440).

Almost surely, 2^{1111797129555} is an apocalyptic number.

1111797129555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1111797129555 is an abundant number, since it is smaller than the sum of its proper divisors (1203738122925).

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

1111797129555 is a wasteful number, since it uses less digits than its factorization.

1111797129555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2743 (or 2678 counting only the distinct ones).

The product of its digits is 992250, while the sum is 54.

The spelling of 1111797129555 in words is "one trillion, one hundred eleven billion, seven hundred ninety-seven million, one hundred twenty-nine thousand, five hundred fifty-five".