55150343421 has 16 divisors (see below), whose sum is σ = 73619234304. Its totient is φ = 36724206384.

The previous prime is 55150343419. The next prime is 55150343429. The reversal of 55150343421 is 12434305155.

It is not a de Polignac number, because 55150343421 - 2¹ = 55150343419 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55150343429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17303190 + ... + 17306376.

It is an arithmetic number, because the mean of its divisors is an integer number (4601202144).

Almost surely, 2^55150343421 is an apocalyptic number.

It is an amenable number.

55150343421 is a deficient number, since it is larger than the sum of its proper divisors (18468890883).

55150343421 is a wasteful number, since it uses less digits than its factorization.

55150343421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8080.

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 55150343421 its reverse (12434305155), we get a palindrome (67584648576).

The spelling of 55150343421 in words is "fifty-five billion, one hundred fifty million, three hundred forty-three thousand, four hundred twenty-one".