65169945204 has 144 divisors (see below), whose sum is σ = 197524591488. Its totient is φ = 16282964736.

The previous prime is 65169945187. The next prime is 65169945221. The reversal of 65169945204 is 40254996156.

It is an interprime number because it is at equal distance from previous prime (65169945187) and next prime (65169945221).

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, 311554 + ... + 476870.

It is an arithmetic number, because the mean of its divisors is an integer number (1371698552).

Almost surely, 2^65169945204 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 65169945204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98762295744).

65169945204 is an abundant number, since it is smaller than the sum of its proper divisors (132354646284).

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

65169945204 is a wasteful number, since it uses less digits than its factorization.

65169945204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165382 (or 165361 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 51.

The spelling of 65169945204 in words is "sixty-five billion, one hundred sixty-nine million, nine hundred forty-five thousand, two hundred four".