513231362064 has 30 divisors (see below), whose sum is σ = 1436334992846. Its totient is φ = 171077120640.

The previous prime is 513231361991. The next prime is 513231362101. The reversal of 513231362064 is 460263132315.

513231362064 is a `hidden beast` number, since 5 + 1 + 3 + 23 + 1 + 3 + 620 + 6 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 310828550400 + 202402811664 = 557520^2 + 449892^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1782053197 + ... + 1782053484.

Almost surely, 2^513231362064 is an apocalyptic number.

It is an amenable number.

513231362064 is an abundant number, since it is smaller than the sum of its proper divisors (923103630782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

513231362064 is a wasteful number, since it uses less digits than its factorization.

513231362064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3564106695 (or 3564106686 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

Adding to 513231362064 its reverse (460263132315), we get a palindrome (973494494379).

The spelling of 513231362064 in words is "five hundred thirteen billion, two hundred thirty-one million, three hundred sixty-two thousand, sixty-four".