2151566673255 has 32 divisors (see below), whose sum is σ = 3825554054400. Its totient is φ = 1147338235296.

The previous prime is 2151566673251. The next prime is 2151566673281. The reversal of 2151566673255 is 5523766651512.

It is not a de Polignac number, because 2151566673255 - 2² = 2151566673251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151566673251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 187749 + ... + 2082878.

It is an arithmetic number, because the mean of its divisors is an integer number (119548564200).

Almost surely, 2^{2151566673255} is an apocalyptic number.

2151566673255 is a deficient number, since it is larger than the sum of its proper divisors (1673987381145).

2151566673255 is a wasteful number, since it uses less digits than its factorization.

2151566673255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2277660 (or 2277654 counting only the distinct ones).

The product of its digits is 11340000, while the sum is 54.

The spelling of 2151566673255 in words is "two trillion, one hundred fifty-one billion, five hundred sixty-six million, six hundred seventy-three thousand, two hundred fifty-five".