20010342155 has 16 divisors (see below), whose sum is σ = 24406272000. Its totient is φ = 15746730720.

The previous prime is 20010342137. The next prime is 20010342173. The reversal of 20010342155 is 55124301002.

It is an interprime number because it is at equal distance from previous prime (20010342137) and next prime (20010342173).

It is not a de Polignac number, because 20010342155 - 2³⁴ = 2830472971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20010342155.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91646 + ... + 220044.

It is an arithmetic number, because the mean of its divisors is an integer number (1525392000).

Almost surely, 2^20010342155 is an apocalyptic number.

20010342155 is a deficient number, since it is larger than the sum of its proper divisors (4395929845).

20010342155 is a wasteful number, since it uses less digits than its factorization.

20010342155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128914.

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 20010342155 its reverse (55124301002), we get a palindrome (75134643157).

The spelling of 20010342155 in words is "twenty billion, ten million, three hundred forty-two thousand, one hundred fifty-five".