2155610665763 has 8 divisors (see below), whose sum is σ = 2156990493840. Its totient is φ = 2154231272160.

The previous prime is 2155610665697. The next prime is 2155610665867. The reversal of 2155610665763 is 3675660165512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2155610665763 - 2²⁶ = 2155543556899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2155610655763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10123448 + ... + 10334186.

It is an arithmetic number, because the mean of its divisors is an integer number (269623811730).

Almost surely, 2^{2155610665763} is an apocalyptic number.

2155610665763 is a deficient number, since it is larger than the sum of its proper divisors (1379828077).

2155610665763 is a wasteful number, since it uses less digits than its factorization.

2155610665763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217237.

The product of its (nonzero) digits is 6804000, while the sum is 53.

The spelling of 2155610665763 in words is "two trillion, one hundred fifty-five billion, six hundred ten million, six hundred sixty-five thousand, seven hundred sixty-three".