55431364461 has 32 divisors (see below), whose sum is σ = 84036526080. Its totient is φ = 32195361600.

The previous prime is 55431364447. The next prime is 55431364463. The reversal of 55431364461 is 16446313455.

It is a happy number.

It is not a de Polignac number, because 55431364461 - 2⁶ = 55431364397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55431364463) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157666 + ... + 368403.

It is an arithmetic number, because the mean of its divisors is an integer number (2626141440).

Almost surely, 2^55431364461 is an apocalyptic number.

It is an amenable number.

55431364461 is a deficient number, since it is larger than the sum of its proper divisors (28605161619).

55431364461 is a wasteful number, since it uses less digits than its factorization.

55431364461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526217.

The product of its digits is 518400, while the sum is 42.

The spelling of 55431364461 in words is "fifty-five billion, four hundred thirty-one million, three hundred sixty-four thousand, four hundred sixty-one".