199126076544 has 160 divisors (see below), whose sum is σ = 611712963840. Its totient is φ = 64234114560.

The previous prime is 199126076533. The next prime is 199126076579. The reversal of 199126076544 is 445670621991.

199126076544 is a `hidden beast` number, since 1 + 9 + 9 + 1 + 26 + 0 + 76 + 544 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11637 + ... + 631179.

It is an arithmetic number, because the mean of its divisors is an integer number (3823206024).

Almost surely, 2^199126076544 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 199126076544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305856481920).

199126076544 is an abundant number, since it is smaller than the sum of its proper divisors (412586887296).

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

199126076544 is an equidigital number, since it uses as much as digits as its factorization.

199126076544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619600 (or 619579 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 199126076544 in words is "one hundred ninety-nine billion, one hundred twenty-six million, seventy-six thousand, five hundred forty-four".