61681094311 has 8 divisors (see below), whose sum is σ = 63375117120. Its totient is φ = 59988490848.

The previous prime is 61681094257. The next prime is 61681094317. The reversal of 61681094311 is 11349018616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61681094311 - 2¹⁵ = 61681061543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61681094317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266431 + ... + 440848.

It is an arithmetic number, because the mean of its divisors is an integer number (7921889640).

Almost surely, 2^61681094311 is an apocalyptic number.

61681094311 is a deficient number, since it is larger than the sum of its proper divisors (1694022809).

61681094311 is a wasteful number, since it uses less digits than its factorization.

61681094311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709673.

The product of its (nonzero) digits is 31104, while the sum is 40.

The spelling of 61681094311 in words is "sixty-one billion, six hundred eighty-one million, ninety-four thousand, three hundred eleven".