61836616445 has 8 divisors (see below), whose sum is σ = 74222955744. Its totient is φ = 49456615824.

The previous prime is 61836616433. The next prime is 61836616483. The reversal of 61836616445 is 54461663816.

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

It is a cyclic number.

It is not a de Polignac number, because 61836616445 - 2³² = 57541649149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61836616393 and 61836616402.

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, 1563179 + ... + 1602248.

It is an arithmetic number, because the mean of its divisors is an integer number (9277869468).

Almost surely, 2^61836616445 is an apocalyptic number.

It is an amenable number.

61836616445 is a deficient number, since it is larger than the sum of its proper divisors (12386339299).

61836616445 is a wasteful number, since it uses less digits than its factorization.

61836616445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3169339.

The product of its digits is 2488320, while the sum is 50.

The spelling of 61836616445 in words is "sixty-one billion, eight hundred thirty-six million, six hundred sixteen thousand, four hundred forty-five".