21152530601045 has 16 divisors (see below), whose sum is σ = 25733266133952. Its totient is φ = 16688583550080.

The previous prime is 21152530600897. The next prime is 21152530601047. The reversal of 21152530601045 is 54010603525112.

It is not a de Polignac number, because 21152530601045 - 2²² = 21152526406741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21152530600996 and 21152530601014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21152530601047) 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, 909830 + ... + 6567560.

It is an arithmetic number, because the mean of its divisors is an integer number (1608329133372).

Almost surely, 2^{21152530601045} is an apocalyptic number.

It is an amenable number.

21152530601045 is a deficient number, since it is larger than the sum of its proper divisors (4580735532907).

21152530601045 is a wasteful number, since it uses less digits than its factorization.

21152530601045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5668052.

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 21152530601045 in words is "twenty-one trillion, one hundred fifty-two billion, five hundred thirty million, six hundred one thousand, forty-five".