61995490704 has 180 divisors, whose sum is σ = 203789891136. Its totient is φ = 17540820864.

The previous prime is 61995490703. The next prime is 61995490717. The reversal of 61995490704 is 40709459916.

It is a happy number.

61995490704 is a `hidden beast` number, since 6 + 1 + 99 + 549 + 0 + 7 + 0 + 4 = 666.

61995490704 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 (61995490703) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 684117 + ... + 769419.

Almost surely, 2^61995490704 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 61995490704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101894945568).

61995490704 is an abundant number, since it is smaller than the sum of its proper divisors (141794400432).

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

61995490704 is a wasteful number, since it uses less digits than its factorization.

61995490704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85434 (or 85418 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The spelling of 61995490704 in words is "sixty-one billion, nine hundred ninety-five million, four hundred ninety thousand, seven hundred four".