61214439617881 has 8 divisors (see below), whose sum is σ = 66779461087200. Its totient is φ = 55649430217440.

The previous prime is 61214439617857. The next prime is 61214439617887. The reversal of 61214439617881 is 18871693441216.

It is a happy number.

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 61214439617881 - 2¹³ = 61214439609689 is a prime.

It is a super-2 number, since 2×61214439617881² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61214439617887) 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, 10047810 + ... + 14946148.

It is an arithmetic number, because the mean of its divisors is an integer number (8347432635900).

Almost surely, 2^{61214439617881} is an apocalyptic number.

It is an amenable number.

61214439617881 is a deficient number, since it is larger than the sum of its proper divisors (5565021469319).

61214439617881 is a wasteful number, since it uses less digits than its factorization.

61214439617881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6034439.

The product of its digits is 13934592, while the sum is 61.

The spelling of 61214439617881 in words is "sixty-one trillion, two hundred fourteen billion, four hundred thirty-nine million, six hundred seventeen thousand, eight hundred eighty-one".