20105155030400 has 96 divisors (see below), whose sum is σ = 54181108225080. Its totient is φ = 7310965452800.

The previous prime is 20105155030357. The next prime is 20105155030409. The reversal of 20105155030400 is 403055150102.

It is a self number, because there is not a number n which added to its sum of digits gives 20105155030400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20105155030409) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 285549389 + ... + 285619788.

Almost surely, 2^{20105155030400} is an apocalyptic number.

20105155030400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20105155030400 is an abundant number, since it is smaller than the sum of its proper divisors (34075953194680).

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

20105155030400 is a wasteful number, since it uses less digits than its factorization.

20105155030400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571169212 (or 571169195 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The spelling of 20105155030400 in words is "twenty trillion, one hundred five billion, one hundred fifty-five million, thirty thousand, four hundred".