263157921345 has 16 divisors (see below), whose sum is σ = 459330190272. Its totient is φ = 127591719360.

The previous prime is 263157921329. The next prime is 263157921401. The reversal of 263157921345 is 543129751362.

It is not a de Polignac number, because 263157921345 - 2⁴ = 263157921329 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 263157921294 and 263157921303.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 797448082 + ... + 797448411.

It is an arithmetic number, because the mean of its divisors is an integer number (28708136892).

Almost surely, 2^263157921345 is an apocalyptic number.

It is an amenable number.

263157921345 is a deficient number, since it is larger than the sum of its proper divisors (196172268927).

263157921345 is a wasteful number, since it uses less digits than its factorization.

263157921345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1594896512.

The product of its digits is 1360800, while the sum is 48.

The spelling of 263157921345 in words is "two hundred sixty-three billion, one hundred fifty-seven million, nine hundred twenty-one thousand, three hundred forty-five".