513366121642 has 32 divisors (see below), whose sum is σ = 841206435840. Its totient is φ = 233028262320.

The previous prime is 513366121627. The next prime is 513366121651. The reversal of 513366121642 is 246121663315.

It is a junction number, because it is equal to n+sod(n) for n = 513366121595 and 513366121604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58445583 + ... + 58454365.

It is an arithmetic number, because the mean of its divisors is an integer number (26287701120).

Almost surely, 2^513366121642 is an apocalyptic number.

513366121642 is a deficient number, since it is larger than the sum of its proper divisors (327840314198).

513366121642 is a wasteful number, since it uses less digits than its factorization.

513366121642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12138.

The product of its digits is 155520, while the sum is 40.

Adding to 513366121642 its reverse (246121663315), we get a palindrome (759487784957).

The spelling of 513366121642 in words is "five hundred thirteen billion, three hundred sixty-six million, one hundred twenty-one thousand, six hundred forty-two".