65836674072 has 128 divisors (see below), whose sum is σ = 197882496000. Its totient is φ = 20161249920.

The previous prime is 65836674037. The next prime is 65836674091. The reversal of 65836674072 is 27047663856.

65836674072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×65836674072² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 536929 + ... + 648047.

It is an arithmetic number, because the mean of its divisors is an integer number (1545957000).

Almost surely, 2^65836674072 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 65836674072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98941248000).

65836674072 is an abundant number, since it is smaller than the sum of its proper divisors (132045821928).

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

65836674072 is a wasteful number, since it uses less digits than its factorization.

65836674072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111358 (or 111348 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 54.

The spelling of 65836674072 in words is "sixty-five billion, eight hundred thirty-six million, six hundred seventy-four thousand, seventy-two".