20155300538 has 8 divisors (see below), whose sum is σ = 32011359732. Its totient is φ = 9484847296.

The previous prime is 20155300523. The next prime is 20155300541. The reversal of 20155300538 is 83500355102.

It can be written as a sum of positive squares in 2 ways, for example, as 16139923849 + 4015376689 = 127043^2 + 63367^2 .

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

It is a super-2 number, since 2×20155300538² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296401445 + ... + 296401512.

Almost surely, 2^20155300538 is an apocalyptic number.

20155300538 is a deficient number, since it is larger than the sum of its proper divisors (11856059194).

20155300538 is a wasteful number, since it uses less digits than its factorization.

20155300538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592802976.

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 20155300538 in words is "twenty billion, one hundred fifty-five million, three hundred thousand, five hundred thirty-eight".