20435441143530 has 64 divisors (see below), whose sum is σ = 59001574440960. Its totient is φ = 4425118081344.

The previous prime is 20435441143519. The next prime is 20435441143543. The reversal of 20435441143530 is 3534114453402.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2560828234 + ... + 2560836213.

It is an arithmetic number, because the mean of its divisors is an integer number (921899600640).

Almost surely, 2^{20435441143530} is an apocalyptic number.

20435441143530 is an abundant number, since it is smaller than the sum of its proper divisors (38566133297430).

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

20435441143530 is a wasteful number, since it uses less digits than its factorization.

20435441143530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5121664483.

The product of its (nonzero) digits is 345600, while the sum is 39.

Adding to 20435441143530 its reverse (3534114453402), we get a palindrome (23969555596932).

The spelling of 20435441143530 in words is "twenty trillion, four hundred thirty-five billion, four hundred forty-one million, one hundred forty-three thousand, five hundred thirty".