61676816278 has 32 divisors (see below), whose sum is σ = 115838760960. Its totient is φ = 23926781760.

The previous prime is 61676816197. The next prime is 61676816291. The reversal of 61676816278 is 87261867616.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 823558 + ... + 895321.

It is an arithmetic number, because the mean of its divisors is an integer number (3619961280).

Almost surely, 2^61676816278 is an apocalyptic number.

61676816278 is a deficient number, since it is larger than the sum of its proper divisors (54161944682).

61676816278 is a wasteful number, since it uses less digits than its factorization.

61676816278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1719132.

The product of its digits is 8128512, while the sum is 58.

The spelling of 61676816278 in words is "sixty-one billion, six hundred seventy-six million, eight hundred sixteen thousand, two hundred seventy-eight".