55533443431404 has 12 divisors (see below), whose sum is σ = 129578034673304. Its totient is φ = 18511147810464.

The previous prime is 55533443431373. The next prime is 55533443431421. The reversal of 55533443431404 is 40413434433555.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×55533443431404² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2313893476297 + ... + 2313893476320.

Almost surely, 2^{55533443431404} is an apocalyptic number.

It is an amenable number.

55533443431404 is an abundant number, since it is smaller than the sum of its proper divisors (74044591241900).

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

55533443431404 is a wasteful number, since it uses less digits than its factorization.

55533443431404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4627786952624 (or 4627786952622 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 48.

Adding to 55533443431404 its reverse (40413434433555), we get a palindrome (95946877864959).

The spelling of 55533443431404 in words is "fifty-five trillion, five hundred thirty-three billion, four hundred forty-three million, four hundred thirty-one thousand, four hundred four".