1255605830761 has 16 divisors (see below), whose sum is σ = 1264659840000. Its totient is φ = 1246582104768.

The previous prime is 1255605830651. The next prime is 1255605830767. The reversal of 1255605830761 is 1670385065521.

It is a cyclic number.

It is not a de Polignac number, because 1255605830761 - 2³³ = 1247015896169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1255605830767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288709215 + ... + 288713563.

It is an arithmetic number, because the mean of its divisors is an integer number (79041240000).

Almost surely, 2^{1255605830761} is an apocalyptic number.

It is an amenable number.

1255605830761 is a deficient number, since it is larger than the sum of its proper divisors (9054009239).

1255605830761 is a wasteful number, since it uses less digits than its factorization.

1255605830761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7368.

The product of its (nonzero) digits is 1512000, while the sum is 49.

The spelling of 1255605830761 in words is "one trillion, two hundred fifty-five billion, six hundred five million, eight hundred thirty thousand, seven hundred sixty-one".