61934616845 has 8 divisors (see below), whose sum is σ = 74333433240. Its totient is φ = 49539764800.

The previous prime is 61934616833. The next prime is 61934616899. The reversal of 61934616845 is 54861643916.

61934616845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 7346032681 + 54588584164 = 85709^2 + 233642^2 .

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

It is not a de Polignac number, because 61934616845 - 2¹⁴ = 61934600461 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 956606 + ... + 1019295.

It is an arithmetic number, because the mean of its divisors is an integer number (9291679155).

Almost surely, 2^61934616845 is an apocalyptic number.

It is an amenable number.

61934616845 is a deficient number, since it is larger than the sum of its proper divisors (12398816395).

61934616845 is a wasteful number, since it uses less digits than its factorization.

61934616845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982175.

The product of its digits is 3732480, while the sum is 53.

The spelling of 61934616845 in words is "sixty-one billion, nine hundred thirty-four million, six hundred sixteen thousand, eight hundred forty-five".