87453109043639 has 8 divisors (see below), whose sum is σ = 91390878923520. Its totient is φ = 83601883556856.

The previous prime is 87453109043623. The next prime is 87453109043681. The reversal of 87453109043639 is 93634090135478.

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 87453109043639 - 2⁴ = 87453109043623 is a prime.

It is a super-2 number, since 2×87453109043639² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87453109043039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21636096209 + ... + 21636100250.

It is an arithmetic number, because the mean of its divisors is an integer number (11423859865440).

Almost surely, 2^{87453109043639} is an apocalyptic number.

87453109043639 is a deficient number, since it is larger than the sum of its proper divisors (3937769879881).

87453109043639 is a wasteful number, since it uses less digits than its factorization.

87453109043639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43272196549.

The product of its (nonzero) digits is 58786560, while the sum is 62.

The spelling of 87453109043639 in words is "eighty-seven trillion, four hundred fifty-three billion, one hundred nine million, forty-three thousand, six hundred thirty-nine".