61799162880 has 1056 divisors, whose sum is σ = 258924211200. Its totient is φ = 12283674624.

The previous prime is 61799162863. The next prime is 61799162881. The reversal of 61799162880 is 8826199716.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a self number, because there is not a number n which added to its sum of digits gives 61799162880.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61799162881) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 345246631 + ... + 345246809.

Almost surely, 2^61799162880 is an apocalyptic number.

61799162880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61799162880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129462105600).

61799162880 is an abundant number, since it is smaller than the sum of its proper divisors (197125048320).

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

61799162880 is a wasteful number, since it uses less digits than its factorization.

61799162880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 57.

The spelling of 61799162880 in words is "sixty-one billion, seven hundred ninety-nine million, one hundred sixty-two thousand, eight hundred eighty".