20430342526 has 24 divisors (see below), whose sum is σ = 35149301712. Its totient is φ = 8882755200.

The previous prime is 20430342511. The next prime is 20430342547. The reversal of 20430342526 is 62524303402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1829715 + ... + 1840846.

It is an arithmetic number, because the mean of its divisors is an integer number (1464554238).

Almost surely, 2^20430342526 is an apocalyptic number.

20430342526 is a deficient number, since it is larger than the sum of its proper divisors (14718959186).

20430342526 is a wasteful number, since it uses less digits than its factorization.

20430342526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3670608 (or 3670597 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 20430342526 its reverse (62524303402), we get a palindrome (82954645928).

The spelling of 20430342526 in words is "twenty billion, four hundred thirty million, three hundred forty-two thousand, five hundred twenty-six".