7492947774858 has 192 divisors, whose sum is σ = 20611381939200. Its totient is φ = 1975658817600.

The previous prime is 7492947774841. The next prime is 7492947774881. The reversal of 7492947774858 is 8584777492947.

It is a happy number.

7492947774858 is a `hidden beast` number, since 7 + 4 + 9 + 29 + 47 + 77 + 485 + 8 = 666.

It is a super-2 number, since 2×7492947774858² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 297102573 + ... + 297127791.

It is an arithmetic number, because the mean of its divisors is an integer number (107350947600).

Almost surely, 2^{7492947774858} is an apocalyptic number.

7492947774858 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7492947774858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10305690969600).

7492947774858 is an abundant number, since it is smaller than the sum of its proper divisors (13118434164342).

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

7492947774858 is a wasteful number, since it uses less digits than its factorization.

7492947774858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29914 (or 29895 counting only the distinct ones).

The product of its digits is 7965941760, while the sum is 81.

The spelling of 7492947774858 in words is "seven trillion, four hundred ninety-two billion, nine hundred forty-seven million, seven hundred seventy-four thousand, eight hundred fifty-eight".