1550420543431 has 8 divisors (see below), whose sum is σ = 1563687843200. Its totient is φ = 1537183432440.

The previous prime is 1550420543369. The next prime is 1550420543501. The reversal of 1550420543431 is 1343450240551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1550420543431 - 2¹³ = 1550420535239 is a prime.

It is a super-2 number, since 2×1550420543431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1550420541431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7444035 + ... + 7649476.

It is an arithmetic number, because the mean of its divisors is an integer number (195460980400).

Almost surely, 2^{1550420543431} is an apocalyptic number.

1550420543431 is a deficient number, since it is larger than the sum of its proper divisors (13267299769).

1550420543431 is a wasteful number, since it uses less digits than its factorization.

1550420543431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15094389.

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 1550420543431 its reverse (1343450240551), we get a palindrome (2893870783982).

The spelling of 1550420543431 in words is "one trillion, five hundred fifty billion, four hundred twenty million, five hundred forty-three thousand, four hundred thirty-one".