61819109834992 has 20 divisors (see below), whose sum is σ = 119775332928240. Its totient is φ = 30909346498688.

The previous prime is 61819109834929. The next prime is 61819109835017. The reversal of 61819109834992 is 29943890191816.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10565053 + ... + 15338140.

It is an arithmetic number, because the mean of its divisors is an integer number (5988766646412).

Almost surely, 2^{61819109834992} is an apocalyptic number.

It is an amenable number.

61819109834992 is a deficient number, since it is larger than the sum of its proper divisors (57956223093248).

61819109834992 is a wasteful number, since it uses less digits than its factorization.

61819109834992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26052360 (or 26052354 counting only the distinct ones).

The product of its (nonzero) digits is 60466176, while the sum is 70.

The spelling of 61819109834992 in words is "sixty-one trillion, eight hundred nineteen billion, one hundred nine million, eight hundred thirty-four thousand, nine hundred ninety-two".