61722027752 has 128 divisors (see below), whose sum is σ = 150827581440. Its totient is φ = 22960903680.

The previous prime is 61722027739. The next prime is 61722027799. The reversal of 61722027752 is 25772022716.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8596388 + ... + 8603564.

It is an arithmetic number, because the mean of its divisors is an integer number (1178340480).

Almost surely, 2^61722027752 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 61722027752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75413790720).

61722027752 is an abundant number, since it is smaller than the sum of its proper divisors (89105553688).

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

61722027752 is a wasteful number, since it uses less digits than its factorization.

61722027752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7831 (or 7827 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 41.

The spelling of 61722027752 in words is "sixty-one billion, seven hundred twenty-two million, twenty-seven thousand, seven hundred fifty-two".