61906803616 has 48 divisors (see below), whose sum is σ = 139307321664. Its totient is φ = 26528246784.

The previous prime is 61906803593. The next prime is 61906803617. The reversal of 61906803616 is 61630860916.

It is not an unprimeable number, because it can be changed into a prime (61906803617) 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, 3117816 + ... + 3137608.

It is an arithmetic number, because the mean of its divisors is an integer number (2902235868).

Almost surely, 2^61906803616 is an apocalyptic number.

It is an amenable number.

61906803616 is an abundant number, since it is smaller than the sum of its proper divisors (77400518048).

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

61906803616 is a wasteful number, since it uses less digits than its factorization.

61906803616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33773 (or 33765 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 46.

The spelling of 61906803616 in words is "sixty-one billion, nine hundred six million, eight hundred three thousand, six hundred sixteen".