987263720573 has 16 divisors (see below), whose sum is σ = 1069357234176. Its totient is φ = 906054015360.

The previous prime is 987263720567. The next prime is 987263720609. The reversal of 987263720573 is 375027362789.

It is a happy number.

It is not a de Polignac number, because 987263720573 - 2¹⁰ = 987263719549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987263720503) 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 15 ways as a sum of consecutive naturals, for example, 4478465 + ... + 4693737.

It is an arithmetic number, because the mean of its divisors is an integer number (66834827136).

Almost surely, 2^987263720573 is an apocalyptic number.

It is an amenable number.

987263720573 is a deficient number, since it is larger than the sum of its proper divisors (82093513603).

987263720573 is a wasteful number, since it uses less digits than its factorization.

987263720573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217324.

The product of its (nonzero) digits is 26671680, while the sum is 59.

The spelling of 987263720573 in words is "nine hundred eighty-seven billion, two hundred sixty-three million, seven hundred twenty thousand, five hundred seventy-three".