87364723573 has 4 divisors (see below), whose sum is σ = 88417310688. Its totient is φ = 86312136460.

The previous prime is 87364723571. The next prime is 87364723577. The reversal of 87364723573 is 37532746378.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 87364723573 - 2¹ = 87364723571 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 (87364723571) 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, 526293433 + ... + 526293598.

It is an arithmetic number, because the mean of its divisors is an integer number (22104327672).

Almost surely, 2^87364723573 is an apocalyptic number.

87364723573 is a gapful number since it is divisible by the number (83) formed by its first and last digit.

It is an amenable number.

87364723573 is a deficient number, since it is larger than the sum of its proper divisors (1052587115).

87364723573 is a wasteful number, since it uses less digits than its factorization.

87364723573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052587114.

The product of its digits is 17781120, while the sum is 55.

The spelling of 87364723573 in words is "eighty-seven billion, three hundred sixty-four million, seven hundred twenty-three thousand, five hundred seventy-three".