21050035145524 has 24 divisors (see below), whose sum is σ = 45927349409088. Its totient is φ = 8201312394240.

The previous prime is 21050035145429. The next prime is 21050035145539. The reversal of 21050035145524 is 42554153005012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34172134669 + ... + 34172135284.

It is an arithmetic number, because the mean of its divisors is an integer number (1913639558712).

Almost surely, 2^{21050035145524} is an apocalyptic number.

It is an amenable number.

21050035145524 is an abundant number, since it is smaller than the sum of its proper divisors (24877314263564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21050035145524 is a wasteful number, since it uses less digits than its factorization.

21050035145524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68344269975 (or 68344269973 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 37.

It can be divided in two parts, 2105003 and 5145524, that added together give a palindrome (7250527).

The spelling of 21050035145524 in words is "twenty-one trillion, fifty billion, thirty-five million, one hundred forty-five thousand, five hundred twenty-four".