61537344433 has 8 divisors (see below), whose sum is σ = 63169952000. Its totient is φ = 59926078368.

The previous prime is 61537344373. The next prime is 61537344439. The reversal of 61537344433 is 33444373516.

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 61537344433 - 2²¹ = 61535247281 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 61537344433.

It is not an unprimeable number, because it can be changed into a prime (61537344439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5329533 + ... + 5341066.

It is an arithmetic number, because the mean of its divisors is an integer number (7896244000).

Almost surely, 2^61537344433 is an apocalyptic number.

It is an amenable number.

61537344433 is a deficient number, since it is larger than the sum of its proper divisors (1632607567).

61537344433 is a wasteful number, since it uses less digits than its factorization.

61537344433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10670751.

The product of its digits is 1088640, while the sum is 43.

The spelling of 61537344433 in words is "sixty-one billion, five hundred thirty-seven million, three hundred forty-four thousand, four hundred thirty-three".