1556136822255 has 16 divisors (see below), whose sum is σ = 2492165613024. Its totient is φ = 829157406080.

The previous prime is 1556136822241. The next prime is 1556136822301. The reversal of 1556136822255 is 5522286316551.

It is not a de Polignac number, because 1556136822255 - 2¹⁶ = 1556136756719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1556136822198 and 1556136822207.

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, 48873084 + ... + 48904913.

It is an arithmetic number, because the mean of its divisors is an integer number (155760350814).

Almost surely, 2^{1556136822255} is an apocalyptic number.

1556136822255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1556136822255 is a deficient number, since it is larger than the sum of its proper divisors (936028790769).

1556136822255 is a wasteful number, since it uses less digits than its factorization.

1556136822255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97779066.

The product of its digits is 4320000, while the sum is 51.

The spelling of 1556136822255 in words is "one trillion, five hundred fifty-six billion, one hundred thirty-six million, eight hundred twenty-two thousand, two hundred fifty-five".