21375148033 has 16 divisors (see below), whose sum is σ = 22964788224. Its totient is φ = 19822763520.

The previous prime is 21375148021. The next prime is 21375148057. The reversal of 21375148033 is 33084157312.

It is a cyclic number.

It is not a de Polignac number, because 21375148033 - 2²⁵ = 21341593601 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21375147983 and 21375148001.

It is not an unprimeable number, because it can be changed into a prime (21375148633) 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, 2575216 + ... + 2583502.

It is an arithmetic number, because the mean of its divisors is an integer number (1435299264).

Almost surely, 2^21375148033 is an apocalyptic number.

It is an amenable number.

21375148033 is a deficient number, since it is larger than the sum of its proper divisors (1589640191).

21375148033 is a wasteful number, since it uses less digits than its factorization.

21375148033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10512.

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 21375148033 in words is "twenty-one billion, three hundred seventy-five million, one hundred forty-eight thousand, thirty-three".