61706660716 has 12 divisors (see below), whose sum is σ = 112681728432. Its totient is φ = 29511881168.

The previous prime is 61706660699. The next prime is 61706660731.

It is a happy number.

61706660716 is nontrivially palindromic in base 10.

61706660716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335362195 + ... + 335362378.

It is an arithmetic number, because the mean of its divisors is an integer number (9390144036).

Almost surely, 2^61706660716 is an apocalyptic number.

It is an amenable number.

61706660716 is a deficient number, since it is larger than the sum of its proper divisors (50975067716).

61706660716 is a wasteful number, since it uses less digits than its factorization.

61706660716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670724600 (or 670724598 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 46.

The spelling of 61706660716 in words is "sixty-one billion, seven hundred six million, six hundred sixty thousand, seven hundred sixteen".