21155030465023 has 8 divisors (see below), whose sum is σ = 26036960572448. Its totient is φ = 16738046082144.

The previous prime is 21155030465017. The next prime is 21155030465057. The reversal of 21155030465023 is 32056403055112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21155030465023 - 2²⁹ = 21154493594111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21155030466023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116236431036 + ... + 116236431217.

It is an arithmetic number, because the mean of its divisors is an integer number (3254620071556).

Almost surely, 2^{21155030465023} is an apocalyptic number.

21155030465023 is a deficient number, since it is larger than the sum of its proper divisors (4881930107425).

21155030465023 is a wasteful number, since it uses less digits than its factorization.

21155030465023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232472862273.

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 21155030465023 in words is "twenty-one trillion, one hundred fifty-five billion, thirty million, four hundred sixty-five thousand, twenty-three".