2155562102663 has 16 divisors (see below), whose sum is σ = 2192086902720. Its totient is φ = 2119372128000.

The previous prime is 2155562102641. The next prime is 2155562102689. The reversal of 2155562102663 is 3662012655512.

It is a cyclic number.

It is not a de Polignac number, because 2155562102663 - 2²² = 2155557908359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155562101663) 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, 15418331 + ... + 15557507.

It is an arithmetic number, because the mean of its divisors is an integer number (137005431420).

Almost surely, 2^{2155562102663} is an apocalyptic number.

2155562102663 is a deficient number, since it is larger than the sum of its proper divisors (36524800057).

2155562102663 is a wasteful number, since it uses less digits than its factorization.

2155562102663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140378.

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 2155562102663 in words is "two trillion, one hundred fifty-five billion, five hundred sixty-two million, one hundred two thousand, six hundred sixty-three".