1641264162506 has 8 divisors (see below), whose sum is σ = 2487276617700. Its totient is φ = 812171956608.

The previous prime is 1641264162493. The next prime is 1641264162509. The reversal of 1641264162506 is 6052614621461.

It can be written as a sum of positive squares in 2 ways, for example, as 1639590616225 + 1673546281 = 1280465^2 + 40909^2 .

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

It is a super-2 number, since 2×1641264162506² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1641264162509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4230062081 + ... + 4230062468.

Almost surely, 2^{1641264162506} is an apocalyptic number.

1641264162506 is a deficient number, since it is larger than the sum of its proper divisors (846012455194).

1641264162506 is an equidigital number, since it uses as much as digits as its factorization.

1641264162506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8460124648.

The product of its (nonzero) digits is 414720, while the sum is 44.

Adding to 1641264162506 its reverse (6052614621461), we get a palindrome (7693878783967).

The spelling of 1641264162506 in words is "one trillion, six hundred forty-one billion, two hundred sixty-four million, one hundred sixty-two thousand, five hundred six".