8371961623 has 4 divisors (see below), whose sum is σ = 8376739168. Its totient is φ = 8367184080.

The previous prime is 8371961603. The next prime is 8371961629. The reversal of 8371961623 is 3261691738.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3261691738 = 2 ⋅1630845869.

It is a cyclic number.

It is not a de Polignac number, because 8371961623 - 2¹³ = 8371953431 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 (8371961629) 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, 2386143 + ... + 2389648.

It is an arithmetic number, because the mean of its divisors is an integer number (2094184792).

Almost surely, 2^8371961623 is an apocalyptic number.

8371961623 is a deficient number, since it is larger than the sum of its proper divisors (4777545).

8371961623 is a wasteful number, since it uses less digits than its factorization.

8371961623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4777544.

The product of its digits is 326592, while the sum is 46.

The square root of 8371961623 is about 91498.4241558290. The cubic root of 8371961623 is about 2030.5284381437.

The spelling of 8371961623 in words is "eight billion, three hundred seventy-one million, nine hundred sixty-one thousand, six hundred twenty-three".