263488398140 has 24 divisors (see below), whose sum is σ = 603627967152. Its totient is φ = 95813962880.

The previous prime is 263488398137. The next prime is 263488398143. The reversal of 263488398140 is 41893884362.

It is an interprime number because it is at equal distance from previous prime (263488398137) and next prime (263488398143).

It is a super-2 number, since 2×263488398140² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263488398143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 598837049 + ... + 598837488.

It is an arithmetic number, because the mean of its divisors is an integer number (25151165298).

Almost surely, 2^263488398140 is an apocalyptic number.

263488398140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263488398140 is an abundant number, since it is smaller than the sum of its proper divisors (340139569012).

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

263488398140 is a wasteful number, since it uses less digits than its factorization.

263488398140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197674557 (or 1197674555 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 56.

The spelling of 263488398140 in words is "two hundred sixty-three billion, four hundred eighty-eight million, three hundred ninety-eight thousand, one hundred forty".