263913904155 has 32 divisors (see below), whose sum is σ = 460740296448. Its totient is φ = 127933097600.

The previous prime is 263913904061. The next prime is 263913904201. The reversal of 263913904155 is 551409319362.

It is not a de Polignac number, because 263913904155 - 2⁸ = 263913903899 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 698557 + ... + 1007873.

It is an arithmetic number, because the mean of its divisors is an integer number (14398134264).

Almost surely, 2^263913904155 is an apocalyptic number.

263913904155 is a deficient number, since it is larger than the sum of its proper divisors (196826392293).

263913904155 is a wasteful number, since it uses less digits than its factorization.

263913904155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314507.

The product of its (nonzero) digits is 874800, while the sum is 48.

The spelling of 263913904155 in words is "two hundred sixty-three billion, nine hundred thirteen million, nine hundred four thousand, one hundred fifty-five".