1174997555388 has 144 divisors (see below), whose sum is σ = 3135446496000. Its totient is φ = 370492462080.

The previous prime is 1174997555371. The next prime is 1174997555393. The reversal of 1174997555388 is 8835557994711.

It is a happy number.

1174997555388 is a `hidden beast` number, since 1 + 1 + 7 + 499 + 7 + 5 + 5 + 53 + 88 = 666.

It is a super-2 number, since 2×1174997555388² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15873888 + ... + 15947736.

It is an arithmetic number, because the mean of its divisors is an integer number (21773934000).

Almost surely, 2^{1174997555388} is an apocalyptic number.

1174997555388 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1174997555388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1567723248000).

1174997555388 is an abundant number, since it is smaller than the sum of its proper divisors (1960448940612).

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

1174997555388 is a wasteful number, since it uses less digits than its factorization.

1174997555388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74212 (or 74207 counting only the distinct ones).

The product of its digits is 381024000, while the sum is 72.

The spelling of 1174997555388 in words is "one trillion, one hundred seventy-four billion, nine hundred ninety-seven million, five hundred fifty-five thousand, three hundred eighty-eight".