20434345454402 has 32 divisors (see below), whose sum is σ = 33454131148800. Its totient is φ = 9283864297680.

The previous prime is 20434345454401. The next prime is 20434345454429. The reversal of 20434345454402 is 20445454343402.

It is a super-2 number, since 2×20434345454402² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20434345454401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 855446903 + ... + 855470789.

It is an arithmetic number, because the mean of its divisors is an integer number (1045441598400).

Almost surely, 2^{20434345454402} is an apocalyptic number.

20434345454402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20434345454402 is a deficient number, since it is larger than the sum of its proper divisors (13019785694398).

20434345454402 is a wasteful number, since it uses less digits than its factorization.

20434345454402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41006.

The product of its (nonzero) digits is 3686400, while the sum is 44.

Adding to 20434345454402 its reverse (20445454343402), we get a palindrome (40879799797804).

The spelling of 20434345454402 in words is "twenty trillion, four hundred thirty-four billion, three hundred forty-five million, four hundred fifty-four thousand, four hundred two".