65158566480 has 640 divisors, whose sum is σ = 267132902400. Its totient is φ = 14282956800.

The previous prime is 65158566449. The next prime is 65158566523. The reversal of 65158566480 is 8466585156.

65158566480 is a `hidden beast` number, since 6 + 5 + 158 + 5 + 6 + 6 + 480 = 666.

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 127 ways as a sum of consecutive naturals, for example, 79364470 + ... + 79365290.

It is an arithmetic number, because the mean of its divisors is an integer number (417395160).

Almost surely, 2^65158566480 is an apocalyptic number.

65158566480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65158566480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133566451200).

65158566480 is an abundant number, since it is smaller than the sum of its proper divisors (201974335920).

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

65158566480 is a wasteful number, since it uses less digits than its factorization.

65158566480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060 (or 1048 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 54.

The spelling of 65158566480 in words is "sixty-five billion, one hundred fifty-eight million, five hundred sixty-six thousand, four hundred eighty".