20350425453155 has 16 divisors (see below), whose sum is σ = 28031028957120. Its totient is φ = 13893640428672.

The previous prime is 20350425453151. The next prime is 20350425453181. The reversal of 20350425453155 is 55135452405302.

It is a cyclic number.

It is not a de Polignac number, because 20350425453155 - 2² = 20350425453151 is a prime.

It is a super-2 number, since 2×20350425453155² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20350425453151) by changing a digit.

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, 1269513224 + ... + 1269529253.

It is an arithmetic number, because the mean of its divisors is an integer number (1751939309820).

Almost surely, 2^{20350425453155} is an apocalyptic number.

20350425453155 is a deficient number, since it is larger than the sum of its proper divisors (7680603503965).

20350425453155 is a wasteful number, since it uses less digits than its factorization.

20350425453155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2539042718.

The product of its (nonzero) digits is 1800000, while the sum is 44.

Adding to 20350425453155 its reverse (55135452405302), we get a palindrome (75485877858457).

The spelling of 20350425453155 in words is "twenty trillion, three hundred fifty billion, four hundred twenty-five million, four hundred fifty-three thousand, one hundred fifty-five".