20540100002 has 8 divisors (see below), whose sum is σ = 30816482076. Its totient is φ = 10267939312.

The previous prime is 20540099971. The next prime is 20540100023. The reversal of 20540100002 is 20000104502.

It can be written as a sum of positive squares in 2 ways, for example, as 16614952201 + 3925147801 = 128899^2 + 62651^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20540100002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1043153 + ... + 1062660.

Almost surely, 2^20540100002 is an apocalyptic number.

20540100002 is a deficient number, since it is larger than the sum of its proper divisors (10276382074).

20540100002 is a wasteful number, since it uses less digits than its factorization.

20540100002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110692.

The product of its (nonzero) digits is 80, while the sum is 14.

Adding to 20540100002 its reverse (20000104502), we get a palindrome (40540204504).

The spelling of 20540100002 in words is "twenty billion, five hundred forty million, one hundred thousand, two".