61889771757339 has 24 divisors (see below), whose sum is σ = 94124399230160. Its totient is φ = 39078726426432.

The previous prime is 61889771757287. The next prime is 61889771757361. The reversal of 61889771757339 is 93375717798816.

61889771757339 is a `hidden beast` number, since 6 + 1 + 8 + 8 + 9 + 7 + 7 + 1 + 7 + 573 + 39 = 666.

It is not a de Polignac number, because 61889771757339 - 2⁷ = 61889771757211 is a prime.

It is a super-2 number, since 2×61889771757339² (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 (61889771757739) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43513204 + ... + 44913009.

Almost surely, 2^{61889771757339} is an apocalyptic number.

61889771757339 is a deficient number, since it is larger than the sum of its proper divisors (32234627472821).

61889771757339 is a wasteful number, since it uses less digits than its factorization.

61889771757339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88430331 (or 88430328 counting only the distinct ones).

The product of its digits is 3360631680, while the sum is 81.

The spelling of 61889771757339 in words is "sixty-one trillion, eight hundred eighty-nine billion, seven hundred seventy-one million, seven hundred fifty-seven thousand, three hundred thirty-nine".