664503373354062 has 128 divisors (see below), whose sum is σ = 1529569419402240. Its totient is φ = 190492952714240.

The previous prime is 664503373354033. The next prime is 664503373354129. The reversal of 664503373354062 is 260453373305466.

It is a super-2 number, since 2×664503373354062² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 664503373353993 and 664503373354011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 50003728 + ... + 61881980.

It is an arithmetic number, because the mean of its divisors is an integer number (11949761089080).

Almost surely, 2^{664503373354062} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 664503373354062, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (764784709701120).

664503373354062 is an abundant number, since it is smaller than the sum of its proper divisors (865066046048178).

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

664503373354062 is a wasteful number, since it uses less digits than its factorization.

664503373354062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11878698.

The product of its (nonzero) digits is 97977600, while the sum is 57.

The spelling of 664503373354062 in words is "six hundred sixty-four trillion, five hundred three billion, three hundred seventy-three million, three hundred fifty-four thousand, sixty-two".