84400187633 has 2 divisors, whose sum is σ = 84400187634. Its totient is φ = 84400187632.

The previous prime is 84400187629. The next prime is 84400187653. The reversal of 84400187633 is 33678100448.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81240960784 + 3159226849 = 285028^2 + 56207^2 .

It is a cyclic number.

It is not a de Polignac number, because 84400187633 - 2² = 84400187629 is a prime.

It is a super-2 number, since 2×84400187633² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84400187653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42200093816 + 42200093817.

It is an arithmetic number, because the mean of its divisors is an integer number (42200093817).

Almost surely, 2^84400187633 is an apocalyptic number.

It is an amenable number.

84400187633 is a deficient number, since it is larger than the sum of its proper divisors (1).

84400187633 is an equidigital number, since it uses as much as digits as its factorization.

84400187633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 84400187633 in words is "eighty-four billion, four hundred million, one hundred eighty-seven thousand, six hundred thirty-three".