263958815145 has 16 divisors (see below), whose sum is σ = 422343311040. Its totient is φ = 140774965824.

The previous prime is 263958815117. The next prime is 263958815149. The reversal of 263958815145 is 541518859362.

It is not a de Polignac number, because 263958815145 - 2²² = 263954620841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (263958815149) 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, 633862 + ... + 964208.

It is an arithmetic number, because the mean of its divisors is an integer number (26396456940).

Almost surely, 2^263958815145 is an apocalyptic number.

It is an amenable number.

263958815145 is a deficient number, since it is larger than the sum of its proper divisors (158384495895).

263958815145 is a wasteful number, since it uses less digits than its factorization.

263958815145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383624.

The product of its digits is 10368000, while the sum is 57.

The spelling of 263958815145 in words is "two hundred sixty-three billion, nine hundred fifty-eight million, eight hundred fifteen thousand, one hundred forty-five".