263363426240 has 56 divisors (see below), whose sum is σ = 660141234960. Its totient is φ = 99800875008.

The previous prime is 263363426219. The next prime is 263363426251. The reversal of 263363426240 is 42624363362.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21652097 + ... + 21664256.

Almost surely, 2^263363426240 is an apocalyptic number.

263363426240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263363426240 is an abundant number, since it is smaller than the sum of its proper divisors (396777808720).

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

263363426240 is a wasteful number, since it uses less digits than its factorization.

263363426240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43316389 (or 43316379 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 41.

The spelling of 263363426240 in words is "two hundred sixty-three billion, three hundred sixty-three million, four hundred twenty-six thousand, two hundred forty".