506157504389 has 2 divisors, whose sum is σ = 506157504390. Its totient is φ = 506157504388.

The previous prime is 506157504383. The next prime is 506157504431. The reversal of 506157504389 is 983405751605.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 405552448900 + 100605055489 = 636830^2 + 317183^2 .

It is a cyclic number.

It is not a de Polignac number, because 506157504389 - 2²⁰ = 506156455813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 506157504389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (506157504383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253078752194 + 253078752195.

It is an arithmetic number, because the mean of its divisors is an integer number (253078752195).

Almost surely, 2^506157504389 is an apocalyptic number.

It is an amenable number.

506157504389 is a deficient number, since it is larger than the sum of its proper divisors (1).

506157504389 is an equidigital number, since it uses as much as digits as its factorization.

506157504389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536000, while the sum is 53.

The spelling of 506157504389 in words is "five hundred six billion, one hundred fifty-seven million, five hundred four thousand, three hundred eighty-nine".