61893194624 has 16 divisors (see below), whose sum is σ = 123302848920. Its totient is φ = 30946597248.

The previous prime is 61893194609. The next prime is 61893194647. The reversal of 61893194624 is 42649139816.

It is a tau number, because it is divible by the number of its divisors (16).

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 as a sum of consecutive naturals, namely, 241770164 + ... + 241770419.

Almost surely, 2^61893194624 is an apocalyptic number.

61893194624 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

61893194624 is a deficient number, since it is larger than the sum of its proper divisors (61409654296).

61893194624 is an equidigital number, since it uses as much as digits as its factorization.

61893194624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483540597 (or 483540585 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 53.

The spelling of 61893194624 in words is "sixty-one billion, eight hundred ninety-three million, one hundred ninety-four thousand, six hundred twenty-four".