20435220049988 has 6 divisors (see below), whose sum is σ = 35761635087486. Its totient is φ = 10217610024992.

The previous prime is 20435220049967. The next prime is 20435220050023. The reversal of 20435220049988 is 88994002253402.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20290988720704 + 144231329284 = 4504552^2 + 379778^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2554402506245 + ... + 2554402506252.

It is an arithmetic number, because the mean of its divisors is an integer number (5960272514581).

Almost surely, 2^{20435220049988} is an apocalyptic number.

It is an amenable number.

20435220049988 is a deficient number, since it is larger than the sum of its proper divisors (15326415037498).

20435220049988 is a wasteful number, since it uses less digits than its factorization.

20435220049988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5108805012501 (or 5108805012499 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 56.

The spelling of 20435220049988 in words is "twenty trillion, four hundred thirty-five billion, two hundred twenty million, forty-nine thousand, nine hundred eighty-eight".