20363575401 has 27 divisors (see below), whose sum is σ = 31859427639. Its totient is φ = 12528006192.

The previous prime is 20363575363. The next prime is 20363575429. The reversal of 20363575401 is 10457536302.

The square root of 20363575401 is 142701.

It is a perfect power (a square), and thus also a powerful number.

20363575401 is a `hidden beast` number, since 2 + 0 + 3 + 63 + 57 + 540 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3012363225 + 17351212176 = 54885^2 + 131724^2 .

It is not a de Polignac number, because 20363575401 - 2¹³ = 20363567209 is a prime.

It is a super-2 number, since 2×20363575401² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20363575201) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5563510 + ... + 5567168.

Almost surely, 2^20363575401 is an apocalyptic number.

20363575401 is the 142701-st square number.

20363575401 is the 71351-st centered octagonal number.

It is an amenable number.

20363575401 is a deficient number, since it is larger than the sum of its proper divisors (11495852238).

20363575401 is an frugal number, since it uses more digits than its factorization.

20363575401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7350 (or 3675 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

Multiplying 20363575401 by its sum of digits (36), we get a square (733088714436 = 856206²).

The spelling of 20363575401 in words is "twenty billion, three hundred sixty-three million, five hundred seventy-five thousand, four hundred one".