2117498640 has 40 divisors (see below), whose sum is σ = 6564246528. Its totient is φ = 564666240.

The previous prime is 2117498639. The next prime is 2117498671. The reversal of 2117498640 is 468947112.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 2117498592 and 2117498601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4411216 + ... + 4411695.

Almost surely, 2^2117498640 is an apocalyptic number.

2117498640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2117498640 is an abundant number, since it is smaller than the sum of its proper divisors (4446747888).

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

2117498640 is a wasteful number, since it uses less digits than its factorization.

2117498640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8822927 (or 8822921 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 2117498640 is about 46016.2866819999. The cubic root of 2117498640 is about 1284.1262188981.

The spelling of 2117498640 in words is "two billion, one hundred seventeen million, four hundred ninety-eight thousand, six hundred forty".