65942749209744 has 960 divisors, whose sum is σ = 217957049856000. Its totient is φ = 18391005020160.

The previous prime is 65942749209737. The next prime is 65942749209751. The reversal of 65942749209744 is 44790294724956.

65942749209744 is a `hidden beast` number, since 6 + 5 + 9 + 4 + 2 + 7 + 492 + 0 + 97 + 44 = 666.

It is an interprime number because it is at equal distance from previous prime (65942749209737) and next prime (65942749209751).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 91714532617 + ... + 91714533335.

It is an arithmetic number, because the mean of its divisors is an integer number (227038593600).

Almost surely, 2^{65942749209744} 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 65942749209744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108978524928000).

65942749209744 is an abundant number, since it is smaller than the sum of its proper divisors (152014300646256).

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

65942749209744 is a wasteful number, since it uses less digits than its factorization.

65942749209744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236 (or 1227 counting only the distinct ones).

The product of its (nonzero) digits is 1097349120, while the sum is 72.

The spelling of 65942749209744 in words is "sixty-five trillion, nine hundred forty-two billion, seven hundred forty-nine million, two hundred nine thousand, seven hundred forty-four".