2156314243563 has 12 divisors (see below), whose sum is σ = 3138452284968. Its totient is φ = 1426569218880.

The previous prime is 2156314243549. The next prime is 2156314243637. The reversal of 2156314243563 is 3653424136512.

2156314243563 is a `hidden beast` number, since 2 + 1 + 5 + 6 + 3 + 1 + 42 + 43 + 563 = 666.

It is not a de Polignac number, because 2156314243563 - 2⁴ = 2156314243547 is a prime.

It is a super-2 number, since 2×2156314243563² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2156314243463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 914466270 + ... + 914468627.

It is an arithmetic number, because the mean of its divisors is an integer number (261537690414).

Almost surely, 2^{2156314243563} is an apocalyptic number.

2156314243563 is a deficient number, since it is larger than the sum of its proper divisors (982138041405).

2156314243563 is a wasteful number, since it uses less digits than its factorization.

2156314243563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828935034 (or 1828935031 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 45.

The spelling of 2156314243563 in words is "two trillion, one hundred fifty-six billion, three hundred fourteen million, two hundred forty-three thousand, five hundred sixty-three".