61843291044 has 48 divisors (see below), whose sum is σ = 147175636608. Its totient is φ = 20204574208.

The previous prime is 61843290983. The next prime is 61843291109. The reversal of 61843291044 is 44019234816.

It is a junction number, because it is equal to n+sod(n) for n = 61843290987 and 61843291005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 571609 + ... + 671135.

It is an arithmetic number, because the mean of its divisors is an integer number (3066159096).

Almost surely, 2^61843291044 is an apocalyptic number.

It is an amenable number.

61843291044 is an abundant number, since it is smaller than the sum of its proper divisors (85332345564).

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

61843291044 is a wasteful number, since it uses less digits than its factorization.

61843291044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100564 (or 100562 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The spelling of 61843291044 in words is "sixty-one billion, eight hundred forty-three million, two hundred ninety-one thousand, forty-four".