505403542254 has 32 divisors (see below), whose sum is σ = 1100792518560. Its totient is φ = 153761490432.

The previous prime is 505403542253. The next prime is 505403542283. The reversal of 505403542254 is 452245304505.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505403542253) 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, 36394927 + ... + 36408810.

It is an arithmetic number, because the mean of its divisors is an integer number (34399766205).

Almost surely, 2^505403542254 is an apocalyptic number.

505403542254 is an abundant number, since it is smaller than the sum of its proper divisors (595388976306).

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

505403542254 is a wasteful number, since it uses less digits than its factorization.

505403542254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72803844.

The product of its (nonzero) digits is 480000, while the sum is 39.

Adding to 505403542254 its reverse (452245304505), we get a palindrome (957648846759).

The spelling of 505403542254 in words is "five hundred five billion, four hundred three million, five hundred forty-two thousand, two hundred fifty-four".