20342154355 has 16 divisors (see below), whose sum is σ = 25857804960. Its totient is φ = 15309747712.

The previous prime is 20342154341. The next prime is 20342154367. The reversal of 20342154355 is 55345124302.

It is a cyclic number.

It is not a de Polignac number, because 20342154355 - 2¹⁷ = 20342023283 is a prime.

It is a super-3 number, since 3×20342154355³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20342154355.

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 15 ways as a sum of consecutive naturals, for example, 147657 + ... + 249973.

It is an arithmetic number, because the mean of its divisors is an integer number (1616112810).

Almost surely, 2^20342154355 is an apocalyptic number.

20342154355 is a deficient number, since it is larger than the sum of its proper divisors (5515650605).

20342154355 is a wasteful number, since it uses less digits than its factorization.

20342154355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104678.

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 20342154355 its reverse (55345124302), we get a palindrome (75687278657).

The spelling of 20342154355 in words is "twenty billion, three hundred forty-two million, one hundred fifty-four thousand, three hundred fifty-five".