21089148535057 has 32 divisors (see below), whose sum is σ = 22922806636800. Its totient is φ = 19328285779968.

The previous prime is 21089148535027. The next prime is 21089148535061. The reversal of 21089148535057 is 75053584198012.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21089148535057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21089148534992 and 21089148535010.

It is not an unprimeable number, because it can be changed into a prime (21089148535027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 498622803 + ... + 498665095.

It is an arithmetic number, because the mean of its divisors is an integer number (716337707400).

Almost surely, 2^{21089148535057} is an apocalyptic number.

It is an amenable number.

21089148535057 is a deficient number, since it is larger than the sum of its proper divisors (1833658101743).

21089148535057 is a wasteful number, since it uses less digits than its factorization.

21089148535057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47385.

The product of its (nonzero) digits is 12096000, while the sum is 58.

The spelling of 21089148535057 in words is "twenty-one trillion, eighty-nine billion, one hundred forty-eight million, five hundred thirty-five thousand, fifty-seven".