84053530991 has 2 divisors, whose sum is σ = 84053530992. Its totient is φ = 84053530990.

The previous prime is 84053530973. The next prime is 84053531011. The reversal of 84053530991 is 19903535048.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84053530991 - 2⁶ = 84053530927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84053530091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42026765495 + 42026765496.

It is an arithmetic number, because the mean of its divisors is an integer number (42026765496).

Almost surely, 2^84053530991 is an apocalyptic number.

84053530991 is a deficient number, since it is larger than the sum of its proper divisors (1).

84053530991 is an equidigital number, since it uses as much as digits as its factorization.

84053530991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 583200, while the sum is 47.

The spelling of 84053530991 in words is "eighty-four billion, fifty-three million, five hundred thirty thousand, nine hundred ninety-one".