61510111016 has 16 divisors (see below), whose sum is σ = 121401535200. Its totient is φ = 29136368304.

The previous prime is 61510110989. The next prime is 61510111031. The reversal of 61510111016 is 61011101516.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 61510110982 and 61510111000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202335740 + ... + 202336043.

It is an arithmetic number, because the mean of its divisors is an integer number (7587595950).

Almost surely, 2^61510111016 is an apocalyptic number.

It is an amenable number.

61510111016 is a deficient number, since it is larger than the sum of its proper divisors (59891424184).

61510111016 is a wasteful number, since it uses less digits than its factorization.

61510111016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404671808 (or 404671804 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 23.

The spelling of 61510111016 in words is "sixty-one billion, five hundred ten million, one hundred eleven thousand, sixteen".