1020404664626 has 4 divisors (see below), whose sum is σ = 1530606996942. Its totient is φ = 510202332312.

The previous prime is 1020404664599. The next prime is 1020404664637. The reversal of 1020404664626 is 6264664040201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 690353265625 + 330051399001 = 830875^2 + 574501^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255101166155 + ... + 255101166158.

Almost surely, 2^{1020404664626} is an apocalyptic number.

1020404664626 is a deficient number, since it is larger than the sum of its proper divisors (510202332316).

1020404664626 is an equidigital number, since it uses as much as digits as its factorization.

1020404664626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510202332315.

The product of its (nonzero) digits is 331776, while the sum is 41.

The spelling of 1020404664626 in words is "one trillion, twenty billion, four hundred four million, six hundred sixty-four thousand, six hundred twenty-six".