201563336015550 has 144 divisors (see below), whose sum is σ = 556840466744640. Its totient is φ = 52234425573120.

The previous prime is 201563336015533. The next prime is 201563336015557. The reversal of 201563336015550 is 55510633365102.

201563336015550 is a `hidden beast` number, since 2 + 0 + 1 + 5 + 6 + 3 + 33 + 60 + 1 + 5 + 550 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 201563336015496 and 201563336015505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201563336015557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 6501339 + ... + 21104361.

Almost surely, 2^{201563336015550} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201563336015550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278420233372320).

201563336015550 is an abundant number, since it is smaller than the sum of its proper divisors (355277130729090).

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

201563336015550 is a wasteful number, since it uses less digits than its factorization.

201563336015550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14603907 (or 14603899 counting only the distinct ones).

The product of its (nonzero) digits is 1215000, while the sum is 45.

The spelling of 201563336015550 in words is "two hundred one trillion, five hundred sixty-three billion, three hundred thirty-six million, fifteen thousand, five hundred fifty".