263156724040 has 64 divisors (see below), whose sum is σ = 677155484160. Its totient is φ = 90162927360.

The previous prime is 263156723989. The next prime is 263156724079. The reversal of 263156724040 is 40427651362.

263156724040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×263156724040² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 263156723984 and 263156724002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83425 + ... + 730255.

It is an arithmetic number, because the mean of its divisors is an integer number (10580554440).

Almost surely, 2^263156724040 is an apocalyptic number.

263156724040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263156724040 is an abundant number, since it is smaller than the sum of its proper divisors (413998760120).

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

263156724040 is a wasteful number, since it uses less digits than its factorization.

263156724040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648302 (or 648298 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 263156724040 in words is "two hundred sixty-three billion, one hundred fifty-six million, seven hundred twenty-four thousand, forty".