20135155445200 has 30 divisors (see below), whose sum is σ = 48374710958054. Its totient is φ = 8054062177920.

The previous prime is 20135155445173. The next prime is 20135155445233. The reversal of 20135155445200 is 254455153102.

It can be written as a sum of positive squares in 3 ways, for example, as 6529414993984 + 13605740451216 = 2555272^2 + 3688596^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20135155445200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25168943907 + ... + 25168944706.

Almost surely, 2^{20135155445200} is an apocalyptic number.

20135155445200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20135155445200 is an abundant number, since it is smaller than the sum of its proper divisors (28239555512854).

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

20135155445200 is a wasteful number, since it uses less digits than its factorization.

20135155445200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50337888631 (or 50337888620 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 37.

The spelling of 20135155445200 in words is "twenty trillion, one hundred thirty-five billion, one hundred fifty-five million, four hundred forty-five thousand, two hundred".