155403342244431 has 24 divisors (see below), whose sum is σ = 226187823273984. Its totient is φ = 102810095977680.

The previous prime is 155403342244411. The next prime is 155403342244453. The reversal of 155403342244431 is 134442243304551.

It is a happy number.

155403342244431 is a `hidden beast` number, since 1 + 5 + 5 + 40 + 334 + 2 + 244 + 4 + 31 = 666.

It is not a de Polignac number, because 155403342244431 - 2¹¹ = 155403342242383 is a prime.

It is a super-2 number, since 2×155403342244431² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155403342244411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99471730 + ... + 101021936.

It is an arithmetic number, because the mean of its divisors is an integer number (9424492636416).

Almost surely, 2^{155403342244431} is an apocalyptic number.

155403342244431 is a deficient number, since it is larger than the sum of its proper divisors (70784481029553).

155403342244431 is a wasteful number, since it uses less digits than its factorization.

155403342244431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635371 (or 1635368 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 45.

Adding to 155403342244431 its reverse (134442243304551), we get a palindrome (289845585548982).

The spelling of 155403342244431 in words is "one hundred fifty-five trillion, four hundred three billion, three hundred forty-two million, two hundred forty-four thousand, four hundred thirty-one".