61615406622 has 256 divisors, whose sum is σ = 170385408000. Its totient is φ = 14669424000.

The previous prime is 61615406617. The next prime is 61615406623. The reversal of 61615406622 is 22660451616.

61615406622 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61615406623) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 13331472 + ... + 13336092.

It is an arithmetic number, because the mean of its divisors is an integer number (665568000).

Almost surely, 2^61615406622 is an apocalyptic number.

61615406622 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 61615406622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85192704000).

61615406622 is an abundant number, since it is smaller than the sum of its proper divisors (108770001378).

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

61615406622 is a wasteful number, since it uses less digits than its factorization.

61615406622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4708 (or 4694 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 61615406622 in words is "sixty-one billion, six hundred fifteen million, four hundred six thousand, six hundred twenty-two".