2156263063573 has 8 divisors (see below), whose sum is σ = 2159281532576. Its totient is φ = 2153246706000.

The previous prime is 2156263063531. The next prime is 2156263063579. The reversal of 2156263063573 is 3753603626512.

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 2156263063573 - 2³⁷ = 2018824110101 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 (2156263063579) 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, 1521598 + ... + 2574448.

It is an arithmetic number, because the mean of its divisors is an integer number (269910191572).

Almost surely, 2^{2156263063573} is an apocalyptic number.

It is an amenable number.

2156263063573 is a deficient number, since it is larger than the sum of its proper divisors (3018469003).

2156263063573 is a wasteful number, since it uses less digits than its factorization.

2156263063573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055715.

The product of its (nonzero) digits is 4082400, while the sum is 49.

The spelling of 2156263063573 in words is "two trillion, one hundred fifty-six billion, two hundred sixty-three million, sixty-three thousand, five hundred seventy-three".