7640681833574 has 8 divisors (see below), whose sum is σ = 11461136896440. Its totient is φ = 3820302868096.

The previous prime is 7640681833573. The next prime is 7640681833591. The reversal of 7640681833574 is 4753381860467.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×7640681833574² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7640681833573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18772664 + ... + 19175355.

It is an arithmetic number, because the mean of its divisors is an integer number (1432642112055).

Almost surely, 2^{7640681833574} is an apocalyptic number.

7640681833574 is a deficient number, since it is larger than the sum of its proper divisors (3820455062866).

7640681833574 is a wasteful number, since it uses less digits than its factorization.

7640681833574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38048694.

The product of its (nonzero) digits is 81285120, while the sum is 62.

The spelling of 7640681833574 in words is "seven trillion, six hundred forty billion, six hundred eighty-one million, eight hundred thirty-three thousand, five hundred seventy-four".