61698295722 has 64 divisors (see below), whose sum is σ = 145637017344. Its totient is φ = 17056811520.

The previous prime is 61698295691. The next prime is 61698295727. The reversal of 61698295722 is 22759289616.

61698295722 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (61698295727) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171598 + ... + 390950.

It is an arithmetic number, because the mean of its divisors is an integer number (2275578396).

Almost surely, 2^61698295722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61698295722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72818508672).

61698295722 is an abundant number, since it is smaller than the sum of its proper divisors (83938721622).

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

61698295722 is a wasteful number, since it uses less digits than its factorization.

61698295722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219583.

The product of its digits is 6531840, while the sum is 57.

The spelling of 61698295722 in words is "sixty-one billion, six hundred ninety-eight million, two hundred ninety-five thousand, seven hundred twenty-two".