61891282216 has 16 divisors (see below), whose sum is σ = 116932004640. Its totient is φ = 30709414320.

The previous prime is 61891282133. The next prime is 61891282241. The reversal of 61891282216 is 61228219816.

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, 29527236 + ... + 29529331.

It is an arithmetic number, because the mean of its divisors is an integer number (7308250290).

Almost surely, 2^61891282216 is an apocalyptic number.

It is an amenable number.

61891282216 is a deficient number, since it is larger than the sum of its proper divisors (55040722424).

61891282216 is a wasteful number, since it uses less digits than its factorization.

61891282216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59056704 (or 59056700 counting only the distinct ones).

The product of its digits is 165888, while the sum is 46.

The spelling of 61891282216 in words is "sixty-one billion, eight hundred ninety-one million, two hundred eighty-two thousand, two hundred sixteen".