53243220400 has 30 divisors (see below), whose sum is σ = 127916837972. Its totient is φ = 21297288000.

The previous prime is 53243220367. The next prime is 53243220439. The reversal of 53243220400 is 402234235.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 66553626 + ... + 66554425.

Almost surely, 2^53243220400 is an apocalyptic number.

53243220400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

53243220400 is an abundant number, since it is smaller than the sum of its proper divisors (74673617572).

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

53243220400 is a wasteful number, since it uses less digits than its factorization.

53243220400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133108069 (or 133108058 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

Adding to 53243220400 its reverse (402234235), we get a palindrome (53645454635).

The spelling of 53243220400 in words is "fifty-three billion, two hundred forty-three million, two hundred twenty thousand, four hundred".