6557023321636 has 6 divisors (see below), whose sum is σ = 11474790812870. Its totient is φ = 3278511660816.

The previous prime is 6557023321631. The next prime is 6557023321657. The reversal of 6557023321636 is 6361233207556.

It can be written as a sum of positive squares in only one way, i.e., 5112772188736 + 1444251132900 = 2261144^2 + 1201770^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6557023321636.

It is not an unprimeable number, because it can be changed into a prime (6557023321631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 819627915201 + ... + 819627915208.

Almost surely, 2^{6557023321636} is an apocalyptic number.

It is an amenable number.

6557023321636 is a deficient number, since it is larger than the sum of its proper divisors (4917767491234).

6557023321636 is a wasteful number, since it uses less digits than its factorization.

6557023321636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639255830413 (or 1639255830411 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 49.

The spelling of 6557023321636 in words is "six trillion, five hundred fifty-seven billion, twenty-three million, three hundred twenty-one thousand, six hundred thirty-six".