61732638841 has 4 divisors (see below), whose sum is σ = 61931136384. Its totient is φ = 61534141300.

The previous prime is 61732638833. The next prime is 61732638889. The reversal of 61732638841 is 14883623716.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61732638841 - 2³ = 61732638833 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61732633841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99248305 + ... + 99248926.

It is an arithmetic number, because the mean of its divisors is an integer number (15482784096).

Almost surely, 2^61732638841 is an apocalyptic number.

It is an amenable number.

61732638841 is a deficient number, since it is larger than the sum of its proper divisors (198497543).

61732638841 is a wasteful number, since it uses less digits than its factorization.

61732638841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198497542.

The product of its digits is 1161216, while the sum is 49.

The spelling of 61732638841 in words is "sixty-one billion, seven hundred thirty-two million, six hundred thirty-eight thousand, eight hundred forty-one".