2663251340 has 24 divisors (see below), whose sum is σ = 5676305712. Its totient is φ = 1049400000.

The previous prime is 2663251307. The next prime is 2663251343. The reversal of 2663251340 is 431523662.

It is a junction number, because it is equal to n+sod(n) for n = 2663251297 and 2663251306.

It is not an unprimeable number, because it can be changed into a prime (2663251343) 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, 992411 + ... + 995090.

It is an arithmetic number, because the mean of its divisors is an integer number (236512738).

Almost surely, 2^2663251340 is an apocalyptic number.

2663251340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2663251340 is an abundant number, since it is smaller than the sum of its proper divisors (3013054372).

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

2663251340 is a wasteful number, since it uses less digits than its factorization.

2663251340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987577 (or 1987575 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 2663251340 is about 51606.6985962094. The cubic root of 2663251340 is about 1386.1302819687.

The spelling of 2663251340 in words is "two billion, six hundred sixty-three million, two hundred fifty-one thousand, three hundred forty".