2665249400 has 48 divisors (see below), whose sum is σ = 6760047240. Its totient is φ = 969180800.

The previous prime is 2665249381. The next prime is 2665249417. The reversal of 2665249400 is 49425662.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 603539 + ... + 607938.

Almost surely, 2^2665249400 is an apocalyptic number.

2665249400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2665249400 is an abundant number, since it is smaller than the sum of its proper divisors (4094797840).

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

2665249400 is a wasteful number, since it uses less digits than its factorization.

2665249400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211504 (or 1211495 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 2665249400 is about 51626.0535001466. The cubic root of 2665249400 is about 1386.4768357105.

The spelling of 2665249400 in words is "two billion, six hundred sixty-five million, two hundred forty-nine thousand, four hundred".