20311143001464 has 32 divisors (see below), whose sum is σ = 58031837147520. Its totient is φ = 5803183714656.

The previous prime is 20311143001453. The next prime is 20311143001481. The reversal of 20311143001464 is 46410034111302.

It is a super-2 number, since 2×20311143001464² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60449830194 + ... + 60449830529.

It is an arithmetic number, because the mean of its divisors is an integer number (1813494910860).

Almost surely, 2^{20311143001464} is an apocalyptic number.

20311143001464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20311143001464 is an abundant number, since it is smaller than the sum of its proper divisors (37720694146056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20311143001464 is a wasteful number, since it uses less digits than its factorization.

20311143001464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120899660739 (or 120899660735 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

Adding to 20311143001464 its reverse (46410034111302), we get a palindrome (66721177112766).

The spelling of 20311143001464 in words is "twenty trillion, three hundred eleven billion, one hundred forty-three million, one thousand, four hundred sixty-four".