7947265536 has 320 divisors, whose sum is σ = 28472463360. Its totient is φ = 2136637440.

The previous prime is 7947265511. The next prime is 7947265559. The reversal of 7947265536 is 6355627497.

7947265536 is a `hidden beast` number, since 7 + 9 + 47 + 2 + 65 + 536 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (9525600) is a multiple of the sum of its prime divisors (4860).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1642641 + ... + 1647471.

It is an arithmetic number, because the mean of its divisors is an integer number (88976448).

Almost surely, 2^7947265536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7947265536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14236231680).

7947265536 is an abundant number, since it is smaller than the sum of its proper divisors (20525197824).

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

7947265536 is a wasteful number, since it uses less digits than its factorization.

7947265536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4882 (or 4860 counting only the distinct ones).

The product of its digits is 9525600, while the sum is 54.

The square root of 7947265536 is about 89147.4370691609. The cubic root of 7947265536 is about 1995.5957698308.

The spelling of 7947265536 in words is "seven billion, nine hundred forty-seven million, two hundred sixty-five thousand, five hundred thirty-six".