87144207853 has 4 divisors (see below), whose sum is σ = 87144807520. Its totient is φ = 87143608188.

The previous prime is 87144207851. The next prime is 87144207863. The reversal of 87144207853 is 35870244178.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 35870244178 = 2 ⋅17935122089.

It is a cyclic number.

It is not a de Polignac number, because 87144207853 - 2¹ = 87144207851 is a prime.

It is a super-2 number, since 2×87144207853² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87144207797 and 87144207806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87144207851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71176 + ... + 423502.

It is an arithmetic number, because the mean of its divisors is an integer number (21786201880).

Almost surely, 2^87144207853 is an apocalyptic number.

It is an amenable number.

87144207853 is a deficient number, since it is larger than the sum of its proper divisors (599667).

87144207853 is a wasteful number, since it uses less digits than its factorization.

87144207853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599666.

The product of its (nonzero) digits is 1505280, while the sum is 49.

The spelling of 87144207853 in words is "eighty-seven billion, one hundred forty-four million, two hundred seven thousand, eight hundred fifty-three".