61640113103 has 8 divisors (see below), whose sum is σ = 62489892000. Its totient is φ = 60790480128.

The previous prime is 61640113057. The next prime is 61640113127. The reversal of 61640113103 is 30131104616.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61640113103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61640113133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1025558 + ... + 1083996.

It is an arithmetic number, because the mean of its divisors is an integer number (7811236500).

Almost surely, 2^61640113103 is an apocalyptic number.

61640113103 is a deficient number, since it is larger than the sum of its proper divisors (849778897).

61640113103 is a wasteful number, since it uses less digits than its factorization.

61640113103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72961.

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 61640113103 its reverse (30131104616), we get a palindrome (91771217719).

The spelling of 61640113103 in words is "sixty-one billion, six hundred forty million, one hundred thirteen thousand, one hundred three".