61939147726 has 8 divisors (see below), whose sum is σ = 98373940560. Its totient is φ = 29147834208.

The previous prime is 61939147609. The next prime is 61939147727. The reversal of 61939147726 is 62774193916.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61939147727) 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, 910869786 + ... + 910869853.

It is an arithmetic number, because the mean of its divisors is an integer number (12296742570).

Almost surely, 2^61939147726 is an apocalyptic number.

61939147726 is a deficient number, since it is larger than the sum of its proper divisors (36434792834).

61939147726 is a wasteful number, since it uses less digits than its factorization.

61939147726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821739658.

The product of its digits is 3429216, while the sum is 55.

The spelling of 61939147726 in words is "sixty-one billion, nine hundred thirty-nine million, one hundred forty-seven thousand, seven hundred twenty-six".