7749872472890 has 8 divisors (see below), whose sum is σ = 13949770451220. Its totient is φ = 3099948989152.

The previous prime is 7749872472887. The next prime is 7749872472943. The reversal of 7749872472890 is 982742789477.

It can be written as a sum of positive squares in 2 ways, for example, as 6974886282001 + 774986190889 = 2641001^2 + 880333^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387493623635 + ... + 387493623654.

Almost surely, 2^{7749872472890} is an apocalyptic number.

7749872472890 is a deficient number, since it is larger than the sum of its proper divisors (6199897978330).

7749872472890 is a wasteful number, since it uses less digits than its factorization.

7749872472890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774987247296.

The product of its (nonzero) digits is 796594176, while the sum is 74.

The spelling of 7749872472890 in words is "seven trillion, seven hundred forty-nine billion, eight hundred seventy-two million, four hundred seventy-two thousand, eight hundred ninety".