7498920947985 has 24 divisors (see below), whose sum is σ = 13446341012520. Its totient is φ = 3861513315072.

The previous prime is 7498920947887. The next prime is 7498920948019. The reversal of 7498920947985 is 5897490298947.

7498920947985 is a `hidden beast` number, since 7 + 49 + 8 + 9 + 20 + 9 + 479 + 85 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 118619625744 + 7380301322241 = 344412^2 + 2716671^2 .

It is not a de Polignac number, because 7498920947985 - 2¹⁵ = 7498920915217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2873148484 + ... + 2873151093.

It is an arithmetic number, because the mean of its divisors is an integer number (560264208855).

Almost surely, 2^{7498920947985} is an apocalyptic number.

It is an amenable number.

7498920947985 is a deficient number, since it is larger than the sum of its proper divisors (5947420064535).

7498920947985 is a wasteful number, since it uses less digits than its factorization.

7498920947985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5746299617 (or 5746299614 counting only the distinct ones).

The product of its (nonzero) digits is 3292047360, while the sum is 81.

The spelling of 7498920947985 in words is "seven trillion, four hundred ninety-eight billion, nine hundred twenty million, nine hundred forty-seven thousand, nine hundred eighty-five".