87743619581 has 8 divisors (see below), whose sum is σ = 89628142464. Its totient is φ = 85859831680.

The previous prime is 87743619559. The next prime is 87743619641. The reversal of 87743619581 is 18591634778.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87743619581 - 2²⁶ = 87676510717 is a prime.

It is a super-2 number, since 2×87743619581² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87743619581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87743219581) 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 7 ways as a sum of consecutive naturals, for example, 61046 + ... + 423336.

It is an arithmetic number, because the mean of its divisors is an integer number (11203517808).

Almost surely, 2^87743619581 is an apocalyptic number.

It is an amenable number.

87743619581 is a deficient number, since it is larger than the sum of its proper divisors (1884522883).

87743619581 is a wasteful number, since it uses less digits than its factorization.

87743619581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367491.

The product of its digits is 10160640, while the sum is 59.

The spelling of 87743619581 in words is "eighty-seven billion, seven hundred forty-three million, six hundred nineteen thousand, five hundred eighty-one".