1543040401200 has 60 divisors (see below), whose sum is σ = 4942872755688. Its totient is φ = 411477440000.

The previous prime is 1543040401171. The next prime is 1543040401211. The reversal of 1543040401200 is 21040403451.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×1543040401200² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 642932301 + ... + 642934700.

Almost surely, 2^{1543040401200} is an apocalyptic number.

1543040401200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1543040401200 is an abundant number, since it is smaller than the sum of its proper divisors (3399832354488).

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

1543040401200 is a wasteful number, since it uses less digits than its factorization.

1543040401200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285867022 (or 1285867011 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 1543040401200 its reverse (21040403451), we get a palindrome (1564080804651).

The spelling of 1543040401200 in words is "one trillion, five hundred forty-three billion, forty million, four hundred one thousand, two hundred".