65277567040 has 112 divisors (see below), whose sum is σ = 179309158272. Its totient is φ = 22171631616.

The previous prime is 65277566957. The next prime is 65277567041. The reversal of 65277567040 is 4076577256.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×65277567040² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65277567041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103504 + ... + 375856.

Almost surely, 2^65277567040 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 65277567040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89654579136).

65277567040 is an abundant number, since it is smaller than the sum of its proper divisors (114031591232).

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

65277567040 is a wasteful number, since it uses less digits than its factorization.

65277567040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272484 (or 272474 counting only the distinct ones).

The product of its (nonzero) digits is 2469600, while the sum is 49.

The spelling of 65277567040 in words is "sixty-five billion, two hundred seventy-seven million, five hundred sixty-seven thousand, forty".