20201199975 has 144 divisors (see below), whose sum is σ = 40179615840. Its totient is φ = 9620582400.

The previous prime is 20201199973. The next prime is 20201200021. The reversal of 20201199975 is 57999110202.

It is not a de Polignac number, because 20201199975 - 2¹ = 20201199973 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20201199975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201199973) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 64540419 + ... + 64540731.

It is an arithmetic number, because the mean of its divisors is an integer number (279025110).

Almost surely, 2^20201199975 is an apocalyptic number.

20201199975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20201199975 is a deficient number, since it is larger than the sum of its proper divisors (19978415865).

20201199975 is a wasteful number, since it uses less digits than its factorization.

20201199975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722 (or 714 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 45.

The spelling of 20201199975 in words is "twenty billion, two hundred one million, one hundred ninety-nine thousand, nine hundred seventy-five".