61671324546 has 96 divisors (see below), whose sum is σ = 148645905408. Its totient is φ = 18350789760.

The previous prime is 61671324529. The next prime is 61671324557. The reversal of 61671324546 is 64542317616.

61671324546 is a `hidden beast` number, since 6 + 1 + 6 + 71 + 32 + 4 + 546 = 666.

It is a super-2 number, since 2×61671324546² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17095875 + ... + 17099481.

It is an arithmetic number, because the mean of its divisors is an integer number (1548394848).

Almost surely, 2^61671324546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61671324546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74322952704).

61671324546 is an abundant number, since it is smaller than the sum of its proper divisors (86974580862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61671324546 is a wasteful number, since it uses less digits than its factorization.

61671324546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6016 (or 6013 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The spelling of 61671324546 in words is "sixty-one billion, six hundred seventy-one million, three hundred twenty-four thousand, five hundred forty-six".