1550211100655 has 48 divisors (see below), whose sum is σ = 2260363734720. Its totient is φ = 998606665728.

The previous prime is 1550211100649. The next prime is 1550211100673. The reversal of 1550211100655 is 5560011120551.

It is not a de Polignac number, because 1550211100655 - 2¹⁸ = 1550210838511 is a prime.

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, 831719 + ... + 1947351.

It is an arithmetic number, because the mean of its divisors is an integer number (47090911140).

Almost surely, 2^{1550211100655} is an apocalyptic number.

1550211100655 is a deficient number, since it is larger than the sum of its proper divisors (710152634065).

1550211100655 is a wasteful number, since it uses less digits than its factorization.

1550211100655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115748 (or 1115711 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 32.

The spelling of 1550211100655 in words is "one trillion, five hundred fifty billion, two hundred eleven million, one hundred thousand, six hundred fifty-five".