20303140120400 has 60 divisors (see below), whose sum is σ = 48779036126400. Its totient is φ = 8121132512640.

The previous prime is 20303140120397. The next prime is 20303140120429. The reversal of 20303140120400 is 402104130302.

It is a super-2 number, since 2×20303140120400² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28673831 + ... + 29373369.

It is an arithmetic number, because the mean of its divisors is an integer number (812983935440).

Almost surely, 2^{20303140120400} is an apocalyptic number.

20303140120400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20303140120400 is an abundant number, since it is smaller than the sum of its proper divisors (28475896006000).

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

20303140120400 is a wasteful number, since it uses less digits than its factorization.

20303140120400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772116 (or 772105 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20303140120400 its reverse (402104130302), we get a palindrome (20705244250702).

The spelling of 20303140120400 in words is "twenty trillion, three hundred three billion, one hundred forty million, one hundred twenty thousand, four hundred".