2606465821636 has 6 divisors (see below), whose sum is σ = 4561315187870. Its totient is φ = 1303232910816.

The previous prime is 2606465821573. The next prime is 2606465821639. The reversal of 2606465821636 is 6361285646062.

It can be written as a sum of positive squares in only one way, i.e., 2069587223236 + 536878598400 = 1438606^2 + 732720^2 .

It is not an unprimeable number, because it can be changed into a prime (2606465821639) 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 as a sum of consecutive naturals, namely, 325808227701 + ... + 325808227708.

Almost surely, 2^{2606465821636} is an apocalyptic number.

It is an amenable number.

2606465821636 is a deficient number, since it is larger than the sum of its proper divisors (1954849366234).

2606465821636 is a wasteful number, since it uses less digits than its factorization.

2606465821636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651616455413 (or 651616455411 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 55.

The spelling of 2606465821636 in words is "two trillion, six hundred six billion, four hundred sixty-five million, eight hundred twenty-one thousand, six hundred thirty-six".