20523020001 has 16 divisors (see below), whose sum is σ = 29926127808. Its totient is φ = 12407168000.

The previous prime is 20523019987. The next prime is 20523020027. The reversal of 20523020001 is 10002032502.

It is a cyclic number.

It is not a de Polignac number, because 20523020001 - 2⁵ = 20523019969 is a prime.

It is a super-2 number, since 2×20523020001² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20523020071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 762216 + ... + 788681.

It is an arithmetic number, because the mean of its divisors is an integer number (1870382988).

Almost surely, 2^20523020001 is an apocalyptic number.

It is an amenable number.

20523020001 is a deficient number, since it is larger than the sum of its proper divisors (9403107807).

20523020001 is a wasteful number, since it uses less digits than its factorization.

20523020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1551312.

The product of its (nonzero) digits is 120, while the sum is 15.

Adding to 20523020001 its reverse (10002032502), we get a palindrome (30525052503).

The spelling of 20523020001 in words is "twenty billion, five hundred twenty-three million, twenty thousand, one".