65667151648 has 72 divisors (see below), whose sum is σ = 150436412784. Its totient is φ = 28134288000.

The previous prime is 65667151639. The next prime is 65667151651. The reversal of 65667151648 is 84615176656.

It is a super-2 number, since 2×65667151648² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8857063 + ... + 8864473.

It is an arithmetic number, because the mean of its divisors is an integer number (2089394622).

Almost surely, 2^65667151648 is an apocalyptic number.

It is an amenable number.

65667151648 is an abundant number, since it is smaller than the sum of its proper divisors (84769261136).

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

65667151648 is a wasteful number, since it uses less digits than its factorization.

65667151648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13086 (or 13071 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 55.

The spelling of 65667151648 in words is "sixty-five billion, six hundred sixty-seven million, one hundred fifty-one thousand, six hundred forty-eight".