323121665005539 has 16 divisors (see below), whose sum is σ = 430915887225600. Its totient is φ = 215370944284320.

The previous prime is 323121665005523. The next prime is 323121665005541. The reversal of 323121665005539 is 935500566121323.

It is not a de Polignac number, because 323121665005539 - 2⁴ = 323121665005523 is a prime.

It is a super-2 number, since 2×323121665005539² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 323121665005491 and 323121665005500.

It is not an unprimeable number, because it can be changed into a prime (323121665005639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1620378162 + ... + 1620577560.

It is an arithmetic number, because the mean of its divisors is an integer number (26932242951600).

Almost surely, 2^{323121665005539} is an apocalyptic number.

323121665005539 is a deficient number, since it is larger than the sum of its proper divisors (107794222220061).

323121665005539 is a wasteful number, since it uses less digits than its factorization.

323121665005539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305770.

The product of its (nonzero) digits is 4374000, while the sum is 51.

The spelling of 323121665005539 in words is "three hundred twenty-three trillion, one hundred twenty-one billion, six hundred sixty-five million, five thousand, five hundred thirty-nine".