65839621023 has 24 divisors (see below), whose sum is σ = 103978414800. Its totient is φ = 39813903360.

The previous prime is 65839621013. The next prime is 65839621061. The reversal of 65839621023 is 32012693856.

65839621023 is a `hidden beast` number, since 6 + 583 + 9 + 62 + 1 + 0 + 2 + 3 = 666.

It is not a de Polignac number, because 65839621023 - 2¹³ = 65839612831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65839621023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65839621013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 696136 + ... + 785037.

It is an arithmetic number, because the mean of its divisors is an integer number (4332433950).

Almost surely, 2^65839621023 is an apocalyptic number.

65839621023 is a deficient number, since it is larger than the sum of its proper divisors (38138793777).

65839621023 is a wasteful number, since it uses less digits than its factorization.

65839621023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481639 (or 1481636 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 65839621023 in words is "sixty-five billion, eight hundred thirty-nine million, six hundred twenty-one thousand, twenty-three".