1187877122255 has 16 divisors (see below), whose sum is σ = 1427409561600. Its totient is φ = 948997489440.

The previous prime is 1187877122213. The next prime is 1187877122281. The reversal of 1187877122255 is 5522217787811.

It is not a de Polignac number, because 1187877122255 - 2¹⁰ = 1187877121231 is a prime.

It is a super-2 number, since 2×1187877122255² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1187877122255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22647110 + ... + 22699500.

It is an arithmetic number, because the mean of its divisors is an integer number (89213097600).

Almost surely, 2^{1187877122255} is an apocalyptic number.

1187877122255 is a deficient number, since it is larger than the sum of its proper divisors (239532439345).

1187877122255 is an equidigital number, since it uses as much as digits as its factorization.

1187877122255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58534.

The product of its digits is 4390400, while the sum is 56.

The spelling of 1187877122255 in words is "one trillion, one hundred eighty-seven billion, eight hundred seventy-seven million, one hundred twenty-two thousand, two hundred fifty-five".