20002150501 has 4 divisors (see below), whose sum is σ = 20003174892. Its totient is φ = 20001126112.

The previous prime is 20002150477. The next prime is 20002150549. The reversal of 20002150501 is 10505120002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5008392900 + 14993757601 = 70770^2 + 122449^2 .

It is a cyclic number.

It is not a de Polignac number, because 20002150501 - 2³¹ = 17854666853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002150591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 482326 + ... + 522151.

It is an arithmetic number, because the mean of its divisors is an integer number (5000793723).

Almost surely, 2^20002150501 is an apocalyptic number.

It is an amenable number.

20002150501 is a deficient number, since it is larger than the sum of its proper divisors (1024391).

20002150501 is a wasteful number, since it uses less digits than its factorization.

20002150501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024390.

The product of its (nonzero) digits is 100, while the sum is 16.

Adding to 20002150501 its reverse (10505120002), we get a palindrome (30507270503).

The spelling of 20002150501 in words is "twenty billion, two million, one hundred fifty thousand, five hundred one".