20004357210553 has 2 divisors, whose sum is σ = 20004357210554. Its totient is φ = 20004357210552.

The previous prime is 20004357210527. The next prime is 20004357210623. The reversal of 20004357210553 is 35501275340002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15199370457769 + 4804986752784 = 3898637^2 + 2192028^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20004357210553 is a prime.

It is not a weakly prime, because it can be changed into another prime (20004357210353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10002178605276 + 10002178605277.

It is an arithmetic number, because the mean of its divisors is an integer number (10002178605277).

Almost surely, 2^{20004357210553} is an apocalyptic number.

It is an amenable number.

20004357210553 is a deficient number, since it is larger than the sum of its proper divisors (1).

20004357210553 is an equidigital number, since it uses as much as digits as its factorization.

20004357210553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126000, while the sum is 37.

The spelling of 20004357210553 in words is "twenty trillion, four billion, three hundred fifty-seven million, two hundred ten thousand, five hundred fifty-three".