61688474441 has 16 divisors (see below), whose sum is σ = 67495680000. Its totient is φ = 55914637200.

The previous prime is 61688474429. The next prime is 61688474467. The reversal of 61688474441 is 14447488616.

It is a cyclic number.

It is not a de Polignac number, because 61688474441 - 2⁶ = 61688474377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61688474411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9948260 + ... + 9954458.

It is an arithmetic number, because the mean of its divisors is an integer number (4218480000).

Almost surely, 2^61688474441 is an apocalyptic number.

It is an amenable number.

61688474441 is a deficient number, since it is larger than the sum of its proper divisors (5807205559).

61688474441 is a wasteful number, since it uses less digits than its factorization.

61688474441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8740.

The product of its digits is 4128768, while the sum is 53.

The spelling of 61688474441 in words is "sixty-one billion, six hundred eighty-eight million, four hundred seventy-four thousand, four hundred forty-one".