20261364240635 has 16 divisors (see below), whose sum is σ = 28046705538816. Its totient is φ = 13763661046368.

The previous prime is 20261364240569. The next prime is 20261364240641. The reversal of 20261364240635 is 53604246316202.

It is a cyclic number.

It is not a de Polignac number, because 20261364240635 - 2³² = 20257069273339 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2705118317 + ... + 2705125806.

It is an arithmetic number, because the mean of its divisors is an integer number (1752919096176).

Almost surely, 2^{20261364240635} is an apocalyptic number.

20261364240635 is a deficient number, since it is larger than the sum of its proper divisors (7785341298181).

20261364240635 is a wasteful number, since it uses less digits than its factorization.

20261364240635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5410244242.

The product of its (nonzero) digits is 1244160, while the sum is 44.

The spelling of 20261364240635 in words is "twenty trillion, two hundred sixty-one billion, three hundred sixty-four million, two hundred forty thousand, six hundred thirty-five".