153122221836 has 72 divisors (see below), whose sum is σ = 398060477360. Its totient is φ = 49593741696.

The previous prime is 153122221793. The next prime is 153122221877. The reversal of 153122221836 is 638122221351.

153122221836 is a `hidden beast` number, since 1 + 531 + 2 + 22 + 21 + 83 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 153122221836.

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, 906570 + ... + 1062126.

Almost surely, 2^153122221836 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 153122221836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199030238680).

153122221836 is an abundant number, since it is smaller than the sum of its proper divisors (244938255524).

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

153122221836 is a wasteful number, since it uses less digits than its factorization.

153122221836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156343 (or 156338 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The spelling of 153122221836 in words is "one hundred fifty-three billion, one hundred twenty-two million, two hundred twenty-one thousand, eight hundred thirty-six".