61676247808 has 72 divisors (see below), whose sum is σ = 140777376768. Its totient is φ = 26417943552.

The previous prime is 61676247799. The next prime is 61676247823. The reversal of 61676247808 is 80874267616.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3580785 + ... + 3597967.

It is an arithmetic number, because the mean of its divisors is an integer number (1955241344).

Almost surely, 2^61676247808 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 61676247808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70388688384).

61676247808 is an abundant number, since it is smaller than the sum of its proper divisors (79101128960).

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

61676247808 is a wasteful number, since it uses less digits than its factorization.

61676247808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19209 (or 19195 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 55.

The spelling of 61676247808 in words is "sixty-one billion, six hundred seventy-six million, two hundred forty-seven thousand, eight hundred eight".