20311520005401 has 32 divisors (see below), whose sum is σ = 28745093946240. Its totient is φ = 12741798950400.

The previous prime is 20311520005349. The next prime is 20311520005451. The reversal of 20311520005401 is 10450002511302.

It is a happy number.

It is not a de Polignac number, because 20311520005401 - 2¹⁷ = 20311519874329 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20311520005451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26019970 + ... + 26789211.

It is an arithmetic number, because the mean of its divisors is an integer number (898284185820).

Almost surely, 2^{20311520005401} is an apocalyptic number.

It is an amenable number.

20311520005401 is a deficient number, since it is larger than the sum of its proper divisors (8433573940839).

20311520005401 is a wasteful number, since it uses less digits than its factorization.

20311520005401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52809337.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 20311520005401 its reverse (10450002511302), we get a palindrome (30761522516703).

The spelling of 20311520005401 in words is "twenty trillion, three hundred eleven billion, five hundred twenty million, five thousand, four hundred one".