263525366762340 has 48 divisors (see below), whose sum is σ = 737871777892032. Its totient is φ = 70273359616896.

The previous prime is 263525366762327. The next prime is 263525366762351. The reversal of 263525366762340 is 43267663525362.

It is a super-2 number, since 2×263525366762340² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85998027 + ... + 89009613.

It is an arithmetic number, because the mean of its divisors is an integer number (15372328706084).

Almost surely, 2^{263525366762340} is an apocalyptic number.

263525366762340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263525366762340 is an abundant number, since it is smaller than the sum of its proper divisors (474346411129692).

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

263525366762340 is a wasteful number, since it uses less digits than its factorization.

263525366762340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4469996 (or 4469994 counting only the distinct ones).

The product of its (nonzero) digits is 195955200, while the sum is 60.

The spelling of 263525366762340 in words is "two hundred sixty-three trillion, five hundred twenty-five billion, three hundred sixty-six million, seven hundred sixty-two thousand, three hundred forty".