61959982135 has 8 divisors (see below), whose sum is σ = 74398255776. Its totient is φ = 49537134240.

The previous prime is 61959982121. The next prime is 61959982177. The reversal of 61959982135 is 53128995916.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61959982135 - 2⁹ = 61959981623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61959982135.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 3847596 + ... + 3863665.

It is an arithmetic number, because the mean of its divisors is an integer number (9299781972).

Almost surely, 2^61959982135 is an apocalyptic number.

61959982135 is a deficient number, since it is larger than the sum of its proper divisors (12438273641).

61959982135 is a wasteful number, since it uses less digits than its factorization.

61959982135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7712873.

The product of its digits is 5248800, while the sum is 58.

The spelling of 61959982135 in words is "sixty-one billion, nine hundred fifty-nine million, nine hundred eighty-two thousand, one hundred thirty-five".