84915561442 has 16 divisors (see below), whose sum is σ = 134951173632. Its totient is φ = 39934995520.

The previous prime is 84915561439. The next prime is 84915561443. The reversal of 84915561442 is 24416551948.

It is not an unprimeable number, because it can be changed into a prime (84915561443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 735034 + ... + 842677.

It is an arithmetic number, because the mean of its divisors is an integer number (8434448352).

Almost surely, 2^84915561442 is an apocalyptic number.

84915561442 is a deficient number, since it is larger than the sum of its proper divisors (50035612190).

84915561442 is a wasteful number, since it uses less digits than its factorization.

84915561442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579313.

The product of its digits is 1382400, while the sum is 49.

The spelling of 84915561442 in words is "eighty-four billion, nine hundred fifteen million, five hundred sixty-one thousand, four hundred forty-two".