61726361008 has 20 divisors (see below), whose sum is σ = 128794426768. Its totient is φ = 28489089600.

The previous prime is 61726360991. The next prime is 61726361009. The reversal of 61726361008 is 80016362716.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (61726361009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148380468 + ... + 148380883.

Almost surely, 2^61726361008 is an apocalyptic number.

It is an amenable number.

61726361008 is an abundant number, since it is smaller than the sum of its proper divisors (67068065760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61726361008 is a wasteful number, since it uses less digits than its factorization.

61726361008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296761372 (or 296761366 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 61726361008 in words is "sixty-one billion, seven hundred twenty-six million, three hundred sixty-one thousand, eight".