61413891873 has 8 divisors (see below), whose sum is σ = 81966348000. Its totient is φ = 40902015168.

The previous prime is 61413891859. The next prime is 61413891883. The reversal of 61413891873 is 37819831416.

It is a happy number.

61413891873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 61413891873 - 2⁶ = 61413891809 is a prime.

It is a super-2 number, since 2×61413891873² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61413891823) 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, 10141323 + ... + 10147376.

It is an arithmetic number, because the mean of its divisors is an integer number (10245793500).

Almost surely, 2^61413891873 is an apocalyptic number.

It is an amenable number.

61413891873 is a deficient number, since it is larger than the sum of its proper divisors (20552456127).

61413891873 is a wasteful number, since it uses less digits than its factorization.

61413891873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20289711.

The product of its digits is 870912, while the sum is 51.

The spelling of 61413891873 in words is "sixty-one billion, four hundred thirteen million, eight hundred ninety-one thousand, eight hundred seventy-three".