445851980136 has 96 divisors (see below), whose sum is σ = 1231517196000. Its totient is φ = 145668861312.

The previous prime is 445851980111. The next prime is 445851980183. The reversal of 445851980136 is 631089158544.

It is a happy number.

445851980136 is a `hidden beast` number, since 4 + 45 + 8 + 519 + 80 + 1 + 3 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3831175 + ... + 3945833.

It is an arithmetic number, because the mean of its divisors is an integer number (12828304125).

Almost surely, 2^445851980136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445851980136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (615758598000).

445851980136 is an abundant number, since it is smaller than the sum of its proper divisors (785665215864).

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

445851980136 is a wasteful number, since it uses less digits than its factorization.

445851980136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115743 (or 115736 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 54.

The spelling of 445851980136 in words is "four hundred forty-five billion, eight hundred fifty-one million, nine hundred eighty thousand, one hundred thirty-six".