61068240638 has 8 divisors (see below), whose sum is σ = 91751795688. Its totient is φ = 30484308744.

The previous prime is 61068240617. The next prime is 61068240659. The reversal of 61068240638 is 83604286016.

It is an interprime number because it is at equal distance from previous prime (61068240617) and next prime (61068240659).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24904256 + ... + 24906707.

It is an arithmetic number, because the mean of its divisors is an integer number (11468974461).

Almost surely, 2^61068240638 is an apocalyptic number.

61068240638 is a deficient number, since it is larger than the sum of its proper divisors (30683555050).

61068240638 is a wasteful number, since it uses less digits than its factorization.

61068240638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49811578.

The product of its (nonzero) digits is 331776, while the sum is 44.

The spelling of 61068240638 in words is "sixty-one billion, sixty-eight million, two hundred forty thousand, six hundred thirty-eight".