513973781207 has 8 divisors (see below), whose sum is σ = 516156261120. Its totient is φ = 511791568120.

The previous prime is 513973781171. The next prime is 513973781221. The reversal of 513973781207 is 702187379315.

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

It is a cyclic number.

It is not a de Polignac number, because 513973781207 - 2¹⁰ = 513973780183 is a prime.

It is a super-2 number, since 2×513973781207² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513973781257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4436732 + ... + 4551102.

It is an arithmetic number, because the mean of its divisors is an integer number (64519532640).

Almost surely, 2^513973781207 is an apocalyptic number.

513973781207 is a deficient number, since it is larger than the sum of its proper divisors (2182479913).

513973781207 is a wasteful number, since it uses less digits than its factorization.

513973781207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133413.

The product of its (nonzero) digits is 2222640, while the sum is 53.

The spelling of 513973781207 in words is "five hundred thirteen billion, nine hundred seventy-three million, seven hundred eighty-one thousand, two hundred seven".