65740740744 has 128 divisors (see below), whose sum is σ = 189938810880. Its totient is φ = 18573408000.

The previous prime is 65740740743. The next prime is 65740740761. The reversal of 65740740744 is 44704704756.

It is a junction number, because it is equal to n+sod(n) for n = 65740740693 and 65740740702.

It is not an unprimeable number, because it can be changed into a prime (65740740743) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5651254 + ... + 5662874.

It is an arithmetic number, because the mean of its divisors is an integer number (1483896960).

Almost surely, 2^65740740744 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 65740740744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94969405440).

65740740744 is an abundant number, since it is smaller than the sum of its proper divisors (124198070136).

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

65740740744 is a wasteful number, since it uses less digits than its factorization.

65740740744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12011 (or 12007 counting only the distinct ones).

The product of its (nonzero) digits is 2634240, while the sum is 48.

The spelling of 65740740744 in words is "sixty-five billion, seven hundred forty million, seven hundred forty thousand, seven hundred forty-four".