61343526881 has 24 divisors (see below), whose sum is σ = 77529832704. Its totient is φ = 47502823680.

The previous prime is 61343526859. The next prime is 61343526913. The reversal of 61343526881 is 18862534316.

It is not a de Polignac number, because 61343526881 - 2³⁰ = 60269785057 is a prime.

It is a super-2 number, since 2×61343526881² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61343526281) 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, 496040 + ... + 607241.

It is an arithmetic number, because the mean of its divisors is an integer number (3230409696).

Almost surely, 2^61343526881 is an apocalyptic number.

It is an amenable number.

61343526881 is a deficient number, since it is larger than the sum of its proper divisors (16186305823).

61343526881 is a wasteful number, since it uses less digits than its factorization.

61343526881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103361 (or 1103348 counting only the distinct ones).

The product of its digits is 829440, while the sum is 47.

The spelling of 61343526881 in words is "sixty-one billion, three hundred forty-three million, five hundred twenty-six thousand, eight hundred eighty-one".