84993357943553 has 2 divisors, whose sum is σ = 84993357943554. Its totient is φ = 84993357943552.

The previous prime is 84993357943523. The next prime is 84993357943561. The reversal of 84993357943553 is 35534975339948.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71167580743744 + 13825777199809 = 8436088^2 + 3718303^2 .

It is a cyclic number.

It is not a de Polignac number, because 84993357943553 - 2²⁸ = 84993089508097 is a prime.

It is not a weakly prime, because it can be changed into another prime (84993357943513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42496678971776 + 42496678971777.

It is an arithmetic number, because the mean of its divisors is an integer number (42496678971777).

Almost surely, 2^{84993357943553} is an apocalyptic number.

It is an amenable number.

84993357943553 is a deficient number, since it is larger than the sum of its proper divisors (1).

84993357943553 is an equidigital number, since it uses as much as digits as its factorization.

84993357943553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6613488000, while the sum is 77.

The spelling of 84993357943553 in words is "eighty-four trillion, nine hundred ninety-three billion, three hundred fifty-seven million, nine hundred forty-three thousand, five hundred fifty-three".