87246378913 has 4 divisors (see below), whose sum is σ = 87342572080. Its totient is φ = 87150185748.

The previous prime is 87246378893. The next prime is 87246378931. The reversal of 87246378913 is 31987364278.

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 an emirpimes, since its reverse is a distinct semiprime: 31987364278 = 2 ⋅15993682139.

It is a cyclic number.

It is not a de Polignac number, because 87246378913 - 2⁵ = 87246378881 is a prime.

It is a super-2 number, since 2×87246378913² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87246373913) 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, 48095223 + ... + 48097036.

It is an arithmetic number, because the mean of its divisors is an integer number (21835643020).

Almost surely, 2^87246378913 is an apocalyptic number.

It is an amenable number.

87246378913 is a deficient number, since it is larger than the sum of its proper divisors (96193167).

87246378913 is an equidigital number, since it uses as much as digits as its factorization.

87246378913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96193166.

The product of its digits is 12192768, while the sum is 58.

The spelling of 87246378913 in words is "eighty-seven billion, two hundred forty-six million, three hundred seventy-eight thousand, nine hundred thirteen".