61572838733 has 8 divisors (see below), whose sum is σ = 70384349568. Its totient is φ = 52765175664.

The previous prime is 61572838709. The next prime is 61572838763. The reversal of 61572838733 is 33783827516.

It is a happy number.

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 61572838733 - 2⁸ = 61572838477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61572838763) 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 7 ways as a sum of consecutive naturals, for example, 927566 + ... + 991727.

It is an arithmetic number, because the mean of its divisors is an integer number (8798043696).

Almost surely, 2^61572838733 is an apocalyptic number.

It is an amenable number.

61572838733 is a deficient number, since it is larger than the sum of its proper divisors (8811510835).

61572838733 is a wasteful number, since it uses less digits than its factorization.

61572838733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1923883.

The product of its digits is 5080320, while the sum is 53.

The spelling of 61572838733 in words is "sixty-one billion, five hundred seventy-two million, eight hundred thirty-eight thousand, seven hundred thirty-three".