87831963943 has 16 divisors (see below), whose sum is σ = 93995790336. Its totient is φ = 81868346560.

The previous prime is 87831963881. The next prime is 87831963953. The reversal of 87831963943 is 34936913878.

It is a cyclic number.

It is not a de Polignac number, because 87831963943 - 2¹³ = 87831955751 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 (87831963953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 759846 + ... + 867772.

It is an arithmetic number, because the mean of its divisors is an integer number (5874736896).

Almost surely, 2^87831963943 is an apocalyptic number.

87831963943 is a deficient number, since it is larger than the sum of its proper divisors (6163826393).

87831963943 is a wasteful number, since it uses less digits than its factorization.

87831963943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108854.

The product of its digits is 23514624, while the sum is 61.

The spelling of 87831963943 in words is "eighty-seven billion, eight hundred thirty-one million, nine hundred sixty-three thousand, nine hundred forty-three".