21150035153613 has 32 divisors (see below), whose sum is σ = 32994339120000. Its totient is φ = 13353126535296.

The previous prime is 21150035153587. The next prime is 21150035153633. The reversal of 21150035153613 is 31635153005112.

21150035153613 is a `hidden beast` number, since 2 + 1 + 1 + 5 + 0 + 0 + 35 + 1 + 5 + 3 + 613 = 666.

It is not a de Polignac number, because 21150035153613 - 2³² = 21145740186317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21150035153633) 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, 5960448 + ... + 8821961.

It is an arithmetic number, because the mean of its divisors is an integer number (1031073097500).

Almost surely, 2^{21150035153613} is an apocalyptic number.

It is an amenable number.

21150035153613 is a deficient number, since it is larger than the sum of its proper divisors (11844303966387).

21150035153613 is a wasteful number, since it uses less digits than its factorization.

21150035153613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14785226 (or 14785220 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 36.

Adding to 21150035153613 its reverse (31635153005112), we get a palindrome (52785188158725).

The spelling of 21150035153613 in words is "twenty-one trillion, one hundred fifty billion, thirty-five million, one hundred fifty-three thousand, six hundred thirteen".