66247310160 has 320 divisors, whose sum is σ = 234944962560. Its totient is φ = 17147773440.

The previous prime is 66247310137. The next prime is 66247310209. The reversal of 66247310160 is 6101374266.

It is a happy number.

66247310160 is a `hidden beast` number, since 6 + 624 + 7 + 3 + 10 + 16 + 0 = 666.

It is a super-2 number, since 2×66247310160² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15508825 + ... + 15513095.

It is an arithmetic number, because the mean of its divisors is an integer number (734203008).

Almost surely, 2^66247310160 is an apocalyptic number.

66247310160 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 66247310160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117472481280).

66247310160 is an abundant number, since it is smaller than the sum of its proper divisors (168697652400).

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

66247310160 is a wasteful number, since it uses less digits than its factorization.

66247310160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4503 (or 4491 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The spelling of 66247310160 in words is "sixty-six billion, two hundred forty-seven million, three hundred ten thousand, one hundred sixty".