61589751949 has 8 divisors (see below), whose sum is σ = 67507253280. Its totient is φ = 55725322800.

The previous prime is 61589751947. The next prime is 61589751961. The reversal of 61589751949 is 94915798516.

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 61589751949 - 2¹ = 61589751947 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61589751941) 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, 13265614 + ... + 13270255.

It is an arithmetic number, because the mean of its divisors is an integer number (8438406660).

Almost surely, 2^61589751949 is an apocalyptic number.

It is an amenable number.

61589751949 is a deficient number, since it is larger than the sum of its proper divisors (5917501331).

61589751949 is a wasteful number, since it uses less digits than its factorization.

61589751949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26536091.

The product of its digits is 24494400, while the sum is 64.

The spelling of 61589751949 in words is "sixty-one billion, five hundred eighty-nine million, seven hundred fifty-one thousand, nine hundred forty-nine".