61351111116 has 18 divisors (see below), whose sum is σ = 155081975412. Its totient is φ = 20450370360.

The previous prime is 61351111111. The next prime is 61351111117. The reversal of 61351111116 is 61111115316.

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 61351111116.

It is not an unprimeable number, because it can be changed into a prime (61351111111) 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 5 ways as a sum of consecutive naturals, for example, 852098730 + ... + 852098801.

Almost surely, 2^61351111116 is an apocalyptic number.

It is an amenable number.

61351111116 is an abundant number, since it is smaller than the sum of its proper divisors (93730864296).

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

61351111116 is a wasteful number, since it uses less digits than its factorization.

61351111116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1704197541 (or 1704197536 counting only the distinct ones).

The product of its digits is 540, while the sum is 27.

The spelling of 61351111116 in words is "sixty-one billion, three hundred fifty-one million, one hundred eleven thousand, one hundred sixteen".