61505542426 has 8 divisors (see below), whose sum is σ = 92322076320. Its totient is φ = 30731516988.

The previous prime is 61505542403. The next prime is 61505542459. The reversal of 61505542426 is 62424550516.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10623496 + ... + 10629283.

It is an arithmetic number, because the mean of its divisors is an integer number (11540259540).

Almost surely, 2^61505542426 is an apocalyptic number.

61505542426 is a deficient number, since it is larger than the sum of its proper divisors (30816533894).

61505542426 is a wasteful number, since it uses less digits than its factorization.

61505542426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21254228.

The product of its (nonzero) digits is 288000, while the sum is 40.

The spelling of 61505542426 in words is "sixty-one billion, five hundred five million, five hundred forty-two thousand, four hundred twenty-six".