61459968789 has 48 divisors (see below), whose sum is σ = 92773961280. Its totient is φ = 39174347520.

The previous prime is 61459968751. The next prime is 61459968793. The reversal of 61459968789 is 98786995416.

61459968789 is a `hidden beast` number, since 6 + 1 + 459 + 96 + 8 + 7 + 89 = 666.

It is not a de Polignac number, because 61459968789 - 2¹² = 61459964693 is a prime.

It is a super-3 number, since 3×61459968789³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61459988789) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 4864122 + ... + 4876740.

It is an arithmetic number, because the mean of its divisors is an integer number (1932790860).

Almost surely, 2^61459968789 is an apocalyptic number.

It is an amenable number.

61459968789 is a deficient number, since it is larger than the sum of its proper divisors (31313992491).

61459968789 is a wasteful number, since it uses less digits than its factorization.

61459968789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12930 (or 12927 counting only the distinct ones).

The product of its digits is 235146240, while the sum is 72.

The spelling of 61459968789 in words is "sixty-one billion, four hundred fifty-nine million, nine hundred sixty-eight thousand, seven hundred eighty-nine".