61546688383538 has 4 divisors (see below), whose sum is σ = 92320032575310. Its totient is φ = 30773344191768.

The previous prime is 61546688383519. The next prime is 61546688383541. The reversal of 61546688383538 is 83538388664516.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 58066945107889 + 3479743275649 = 7620167^2 + 1865407^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15386672095883 + ... + 15386672095886.

Almost surely, 2^{61546688383538} is an apocalyptic number.

61546688383538 is a deficient number, since it is larger than the sum of its proper divisors (30773344191772).

61546688383538 is a wasteful number, since it uses less digits than its factorization.

61546688383538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30773344191771.

The product of its digits is 2388787200, while the sum is 74.

The spelling of 61546688383538 in words is "sixty-one trillion, five hundred forty-six billion, six hundred eighty-eight million, three hundred eighty-three thousand, five hundred thirty-eight".