65242969920 has 336 divisors, whose sum is σ = 238322193408. Its totient is φ = 16325591040.

The previous prime is 65242969919. The next prime is 65242969931. The reversal of 65242969920 is 2996924256.

It is a happy number.

65242969920 is a `hidden beast` number, since 6 + 524 + 2 + 9 + 6 + 99 + 20 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17966505 + ... + 17970135.

Almost surely, 2^65242969920 is an apocalyptic number.

65242969920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65242969920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119161096704).

65242969920 is an abundant number, since it is smaller than the sum of its proper divisors (173079223488).

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

65242969920 is a wasteful number, since it uses less digits than its factorization.

65242969920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4038 (or 4025 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 54.

The spelling of 65242969920 in words is "sixty-five billion, two hundred forty-two million, nine hundred sixty-nine thousand, nine hundred twenty".