20355135156246 has 32 divisors (see below), whose sum is σ = 44850918882816. Its totient is φ = 6107151260000.

The previous prime is 20355135156229. The next prime is 20355135156253. The reversal of 20355135156246 is 64265153155302.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20355135156195 and 20355135156204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1526781150 + ... + 1526794481.

It is an arithmetic number, because the mean of its divisors is an integer number (1401591215088).

Almost surely, 2^{20355135156246} is an apocalyptic number.

20355135156246 is an abundant number, since it is smaller than the sum of its proper divisors (24495783726570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20355135156246 is a wasteful number, since it uses less digits than its factorization.

20355135156246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3053575748.

The product of its (nonzero) digits is 3240000, while the sum is 48.

The spelling of 20355135156246 in words is "twenty trillion, three hundred fifty-five billion, one hundred thirty-five million, one hundred fifty-six thousand, two hundred forty-six".