61067690964 has 96 divisors (see below), whose sum is σ = 181163539200. Its totient is φ = 17426482560.

The previous prime is 61067690951. The next prime is 61067691031. The reversal of 61067690964 is 46909676016.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 61067690964.

It is a congruent number.

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, 571482 + ... + 669870.

It is an arithmetic number, because the mean of its divisors is an integer number (1887120200).

Almost surely, 2^61067690964 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 61067690964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90581769600).

61067690964 is an abundant number, since it is smaller than the sum of its proper divisors (120095848236).

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

61067690964 is a wasteful number, since it uses less digits than its factorization.

61067690964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99230 (or 99222 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 61067690964 in words is "sixty-one billion, sixty-seven million, six hundred ninety thousand, nine hundred sixty-four".