20435653061404 has 96 divisors (see below), whose sum is σ = 42890060021760. Its totient is φ = 8335761408000.

The previous prime is 20435653061377. The next prime is 20435653061437. The reversal of 20435653061404 is 40416035653402.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17043204 + ... + 18202804.

It is an arithmetic number, because the mean of its divisors is an integer number (446771458560).

Almost surely, 2^{20435653061404} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20435653061404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21445030010880).

20435653061404 is an abundant number, since it is smaller than the sum of its proper divisors (22454406960356).

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

20435653061404 is a wasteful number, since it uses less digits than its factorization.

20435653061404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159979 (or 1159977 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 43.

The spelling of 20435653061404 in words is "twenty trillion, four hundred thirty-five billion, six hundred fifty-three million, sixty-one thousand, four hundred four".