513323003542402 has 4 divisors (see below), whose sum is σ = 769984505313606. Its totient is φ = 256661501771200.

The previous prime is 513323003542381. The next prime is 513323003542403. The reversal of 513323003542402 is 204245300323315.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 296750545149601 + 216572458392801 = 17226449^2 + 14716401^2 .

It is a super-2 number, since 2×513323003542402² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (513323003542403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128330750885599 + ... + 128330750885602.

Almost surely, 2^{513323003542402} is an apocalyptic number.

513323003542402 is a deficient number, since it is larger than the sum of its proper divisors (256661501771204).

513323003542402 is a wasteful number, since it uses less digits than its factorization.

513323003542402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256661501771203.

The product of its (nonzero) digits is 259200, while the sum is 37.

Adding to 513323003542402 its reverse (204245300323315), we get a palindrome (717568303865717).

The spelling of 513323003542402 in words is "five hundred thirteen trillion, three hundred twenty-three billion, three million, five hundred forty-two thousand, four hundred two".