20549155158196 has 48 divisors (see below), whose sum is σ = 41773383332352. Its totient is φ = 8662131475200.

The previous prime is 20549155158151. The next prime is 20549155158199. The reversal of 20549155158196 is 69185155194502.

It is a super-2 number, since 2×20549155158196² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20549155158199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58770480 + ... + 59119096.

It is an arithmetic number, because the mean of its divisors is an integer number (870278819424).

Almost surely, 2^{20549155158196} is an apocalyptic number.

It is an amenable number.

20549155158196 is an abundant number, since it is smaller than the sum of its proper divisors (21224228174156).

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

20549155158196 is a wasteful number, since it uses less digits than its factorization.

20549155158196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383200 (or 383198 counting only the distinct ones).

The product of its (nonzero) digits is 19440000, while the sum is 61.

The spelling of 20549155158196 in words is "twenty trillion, five hundred forty-nine billion, one hundred fifty-five million, one hundred fifty-eight thousand, one hundred ninety-six".