61839059881 has 8 divisors (see below), whose sum is σ = 63825798240. Its totient is φ = 59883608928.

The previous prime is 61839059879. The next prime is 61839059951. The reversal of 61839059881 is 18895093816.

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 61839059881 - 2¹ = 61839059879 is a prime.

It is a super-2 number, since 2×61839059881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61839059831) 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, 7817836 + ... + 7825741.

It is an arithmetic number, because the mean of its divisors is an integer number (7978224780).

Almost surely, 2^61839059881 is an apocalyptic number.

It is an amenable number.

61839059881 is a deficient number, since it is larger than the sum of its proper divisors (1986738359).

61839059881 is a wasteful number, since it uses less digits than its factorization.

61839059881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15643703.

The product of its (nonzero) digits is 3732480, while the sum is 58.

The spelling of 61839059881 in words is "sixty-one billion, eight hundred thirty-nine million, fifty-nine thousand, eight hundred eighty-one".