61336314638 has 4 divisors (see below), whose sum is σ = 92004471960. Its totient is φ = 30668157318.

The previous prime is 61336314631. The next prime is 61336314659. The reversal of 61336314638 is 83641363316.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61336314631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15334078658 + ... + 15334078661.

It is an arithmetic number, because the mean of its divisors is an integer number (23001117990).

Almost surely, 2^61336314638 is an apocalyptic number.

61336314638 is a deficient number, since it is larger than the sum of its proper divisors (30668157322).

61336314638 is a wasteful number, since it uses less digits than its factorization.

61336314638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30668157321.

The product of its digits is 559872, while the sum is 44.

The spelling of 61336314638 in words is "sixty-one billion, three hundred thirty-six million, three hundred fourteen thousand, six hundred thirty-eight".