1181026255475 has 48 divisors (see below), whose sum is σ = 1708007109120. Its totient is φ = 800554099200.

The previous prime is 1181026255429. The next prime is 1181026255477. The reversal of 1181026255475 is 5745526201811.

It is not a de Polignac number, because 1181026255475 - 2⁶ = 1181026255411 is a prime.

It is a super-2 number, since 2×1181026255475² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1181026255477) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 744815 + ... + 1707864.

It is an arithmetic number, because the mean of its divisors is an integer number (35583481440).

Almost surely, 2^{1181026255475} is an apocalyptic number.

1181026255475 is a deficient number, since it is larger than the sum of its proper divisors (526980853645).

1181026255475 is a wasteful number, since it uses less digits than its factorization.

1181026255475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452820 (or 2452815 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 47.

The spelling of 1181026255475 in words is "one trillion, one hundred eighty-one billion, twenty-six million, two hundred fifty-five thousand, four hundred seventy-five".