263391047136 has 192 divisors, whose sum is σ = 929615823360. Its totient is φ = 70827816960.

The previous prime is 263391047081. The next prime is 263391047149. The reversal of 263391047136 is 631740193362.

263391047136 is a `hidden beast` number, since 2 + 63 + 3 + 91 + 0 + 471 + 36 = 666.

It is a super-2 number, since 2×263391047136² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 263391047091 and 263391047100.

It is a congruent number.

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, 1178070 + ... + 1383701.

It is an arithmetic number, because the mean of its divisors is an integer number (4841749080).

Almost surely, 2^263391047136 is an apocalyptic number.

It is an amenable number.

263391047136 is an abundant number, since it is smaller than the sum of its proper divisors (666224776224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

263391047136 is a wasteful number, since it uses less digits than its factorization.

263391047136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2561814 (or 2561800 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 45.

The spelling of 263391047136 in words is "two hundred sixty-three billion, three hundred ninety-one million, forty-seven thousand, one hundred thirty-six".