65163127920 has 160 divisors (see below), whose sum is σ = 220462318080. Its totient is φ = 15790494720.

The previous prime is 65163127877. The next prime is 65163127927. The reversal of 65163127920 is 2972136156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65163127927) 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, 9814842 + ... + 9821478.

It is an arithmetic number, because the mean of its divisors is an integer number (1377889488).

Almost surely, 2^65163127920 is an apocalyptic number.

65163127920 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 65163127920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110231159040).

65163127920 is an abundant number, since it is smaller than the sum of its proper divisors (155299190160).

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

65163127920 is a wasteful number, since it uses less digits than its factorization.

65163127920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10383 (or 10377 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 65163127920 in words is "sixty-five billion, one hundred sixty-three million, one hundred twenty-seven thousand, nine hundred twenty".