84731437547 has 2 divisors, whose sum is σ = 84731437548. Its totient is φ = 84731437546.

The previous prime is 84731437529. The next prime is 84731437573. The reversal of 84731437547 is 74573413748.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84731437547 - 2⁸ = 84731437291 is a prime.

It is a super-2 number, since 2×84731437547² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84731433547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42365718773 + 42365718774.

It is an arithmetic number, because the mean of its divisors is an integer number (42365718774).

Almost surely, 2^84731437547 is an apocalyptic number.

84731437547 is a deficient number, since it is larger than the sum of its proper divisors (1).

84731437547 is an equidigital number, since it uses as much as digits as its factorization.

84731437547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7902720, while the sum is 53.

The spelling of 84731437547 in words is "eighty-four billion, seven hundred thirty-one million, four hundred thirty-seven thousand, five hundred forty-seven".