84671995901 has 2 divisors, whose sum is σ = 84671995902. Its totient is φ = 84671995900.

The previous prime is 84671995873. The next prime is 84671995973. The reversal of 84671995901 is 10959917648.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47742687001 + 36929308900 = 218501^2 + 192170^2 .

It is a cyclic number.

It is not a de Polignac number, because 84671995901 - 2¹⁴ = 84671979517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84671995201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42335997950 + 42335997951.

It is an arithmetic number, because the mean of its divisors is an integer number (42335997951).

Almost surely, 2^84671995901 is an apocalyptic number.

It is an amenable number.

84671995901 is a deficient number, since it is larger than the sum of its proper divisors (1).

84671995901 is an equidigital number, since it uses as much as digits as its factorization.

84671995901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4898880, while the sum is 59.

The spelling of 84671995901 in words is "eighty-four billion, six hundred seventy-one million, nine hundred ninety-five thousand, nine hundred one".