263991073125 has 40 divisors (see below), whose sum is σ = 473678549344. Its totient is φ = 129964824000.

The previous prime is 263991073111. The next prime is 263991073147. The reversal of 263991073125 is 521370199362.

It is not a de Polignac number, because 263991073125 - 2¹³ = 263991064933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5390827 + ... + 5439576.

Almost surely, 2^263991073125 is an apocalyptic number.

263991073125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

263991073125 is a deficient number, since it is larger than the sum of its proper divisors (209687476219).

263991073125 is a wasteful number, since it uses less digits than its factorization.

263991073125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10830439 (or 10830424 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 48.

The spelling of 263991073125 in words is "two hundred sixty-three billion, nine hundred ninety-one million, seventy-three thousand, one hundred twenty-five".