61327227280 has 80 divisors (see below), whose sum is σ = 155713497984. Its totient is φ = 22277104640.

The previous prime is 61327227277. The next prime is 61327227293. The reversal of 61327227280 is 8272272316.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×61327227280² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 802077 + ... + 875203.

Almost surely, 2^61327227280 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 61327227280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77856748992).

61327227280 is an abundant number, since it is smaller than the sum of its proper divisors (94386270704).

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

61327227280 is a wasteful number, since it uses less digits than its factorization.

61327227280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74104 (or 74098 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

Adding to 61327227280 its reverse (8272272316), we get a palindrome (69599499596).

The spelling of 61327227280 in words is "sixty-one billion, three hundred twenty-seven million, two hundred twenty-seven thousand, two hundred eighty".