84661542723 has 12 divisors (see below), whose sum is σ = 114762934104. Its totient is φ = 55515758400.

The previous prime is 84661542683. The next prime is 84661542731. The reversal of 84661542723 is 32724516648.

It is not a de Polignac number, because 84661542723 - 2¹⁷ = 84661411651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84661542773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3780898 + ... + 3803223.

It is an arithmetic number, because the mean of its divisors is an integer number (9563577842).

Almost surely, 2^84661542723 is an apocalyptic number.

84661542723 is a deficient number, since it is larger than the sum of its proper divisors (30101391381).

84661542723 is an equidigital number, since it uses as much as digits as its factorization.

84661542723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7584246 (or 7584185 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 48.

The spelling of 84661542723 in words is "eighty-four billion, six hundred sixty-one million, five hundred forty-two thousand, seven hundred twenty-three".