515423131430623 has 8 divisors (see below), whose sum is σ = 555076064606000. Its totient is φ = 475770912539328.

The previous prime is 515423131430617. The next prime is 515423131430651. The reversal of 515423131430623 is 326034131324515.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-515423131430623 is a prime.

It is a super-2 number, since 2×515423131430623² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 515423131430623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (515423131430653) 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, 177071853 + ... + 179959126.

It is an arithmetic number, because the mean of its divisors is an integer number (69384508075750).

Almost surely, 2^{515423131430623} is an apocalyptic number.

515423131430623 is a deficient number, since it is larger than the sum of its proper divisors (39652933175377).

515423131430623 is a wasteful number, since it uses less digits than its factorization.

515423131430623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357142041.

The product of its (nonzero) digits is 777600, while the sum is 43.

The spelling of 515423131430623 in words is "five hundred fifteen trillion, four hundred twenty-three billion, one hundred thirty-one million, four hundred thirty thousand, six hundred twenty-three".