65377685315616 has 48 divisors (see below), whose sum is σ = 171654052032288. Its totient is φ = 21787783603200.

The previous prime is 65377685315611. The next prime is 65377685315627. The reversal of 65377685315616 is 61651358677356.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (65377685315611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74218750 + ... + 75094461.

It is an arithmetic number, because the mean of its divisors is an integer number (3576126084006).

Almost surely, 2^{65377685315616} is an apocalyptic number.

It is an amenable number.

65377685315616 is an abundant number, since it is smaller than the sum of its proper divisors (106276366716672).

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

65377685315616 is a wasteful number, since it uses less digits than its factorization.

65377685315616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149317785 (or 149317777 counting only the distinct ones).

The product of its digits is 571536000, while the sum is 69.

The spelling of 65377685315616 in words is "sixty-five trillion, three hundred seventy-seven billion, six hundred eighty-five million, three hundred fifteen thousand, six hundred sixteen".