65837600072 has 8 divisors (see below), whose sum is σ = 123445500150. Its totient is φ = 32918800032.

The previous prime is 65837600071. The next prime is 65837600111. The reversal of 65837600072 is 27000673856.

It can be written as a sum of positive squares in only one way, i.e., 43116861316 + 22720738756 = 207646^2 + 150734^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×65837600072² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65837599996 and 65837600032.

It is not an unprimeable number, because it can be changed into a prime (65837600071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4114849997 + ... + 4114850012.

Almost surely, 2^65837600072 is an apocalyptic number.

It is an amenable number.

65837600072 is a deficient number, since it is larger than the sum of its proper divisors (57607900078).

65837600072 is a wasteful number, since it uses less digits than its factorization.

65837600072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8229700015 (or 8229700011 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 65837600072 in words is "sixty-five billion, eight hundred thirty-seven million, six hundred thousand, seventy-two".