65374307856 has 405 divisors, whose sum is σ = 219232398567. Its totient is φ = 18163791360.

The previous prime is 65374307849. The next prime is 65374307861. The reversal of 65374307856 is 65870347356.

The square root of 65374307856 is 255684.

It is a perfect power (a square), and thus also a powerful number.

65374307856 is a `hidden beast` number, since 6 + 537 + 4 + 30 + 78 + 5 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 35381610000 + 29992697856 = 188100^2 + 173184^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 438753670 + ... + 438753818.

Almost surely, 2^65374307856 is an apocalyptic number.

65374307856 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

65374307856 is the 255684-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65374307856

65374307856 is an abundant number, since it is smaller than the sum of its proper divisors (153858090711).

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

65374307856 is a wasteful number, since it uses less digits than its factorization.

65374307856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 54.

The spelling of 65374307856 in words is "sixty-five billion, three hundred seventy-four million, three hundred seven thousand, eight hundred fifty-six".