84420615097 has 32 divisors (see below), whose sum is σ = 109307116800. Its totient is φ = 63397893888.

The previous prime is 84420615091. The next prime is 84420615101. The reversal of 84420615097 is 79051602448.

It is not a de Polignac number, because 84420615097 - 2²⁷ = 84286397369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84420615091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115398 + ... + 426799.

It is an arithmetic number, because the mean of its divisors is an integer number (3415847400).

Almost surely, 2^84420615097 is an apocalyptic number.

It is an amenable number.

84420615097 is a deficient number, since it is larger than the sum of its proper divisors (24886501703).

84420615097 is a wasteful number, since it uses less digits than its factorization.

84420615097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542305.

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 84420615097 in words is "eighty-four billion, four hundred twenty million, six hundred fifteen thousand, ninety-seven".