2021605106510 has 16 divisors (see below), whose sum is σ = 3969697300272. Its totient is φ = 735129129600.

The previous prime is 2021605106483. The next prime is 2021605106519. The reversal of 2021605106510 is 156015061202.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021605106519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9189114011 + ... + 9189114230.

It is an arithmetic number, because the mean of its divisors is an integer number (248106081267).

Almost surely, 2^{2021605106510} is an apocalyptic number.

2021605106510 is a deficient number, since it is larger than the sum of its proper divisors (1948092193762).

2021605106510 is a wasteful number, since it uses less digits than its factorization.

2021605106510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18378228259.

The product of its (nonzero) digits is 3600, while the sum is 29.

The spelling of 2021605106510 in words is "two trillion, twenty-one billion, six hundred five million, one hundred six thousand, five hundred ten".