61610266766 has 4 divisors (see below), whose sum is σ = 92415400152. Its totient is φ = 30805133382.

The previous prime is 61610266703. The next prime is 61610266771. The reversal of 61610266766 is 66766201616.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 61610266766.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15402566690 + ... + 15402566693.

It is an arithmetic number, because the mean of its divisors is an integer number (23103850038).

Almost surely, 2^61610266766 is an apocalyptic number.

61610266766 is a deficient number, since it is larger than the sum of its proper divisors (30805133386).

61610266766 is a wasteful number, since it uses less digits than its factorization.

61610266766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30805133385.

The product of its (nonzero) digits is 653184, while the sum is 47.

The spelling of 61610266766 in words is "sixty-one billion, six hundred ten million, two hundred sixty-six thousand, seven hundred sixty-six".