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20312442135601 = 711277952339169
BaseRepresentation
bin1001001111001010110111…
…11001011110010000110001
32122220211222000110111202221
410213211123321132100301
510130244340141314401
6111111223533241041
74164345152244130
oct447453371362061
978824860414687
1020312442135601
11652150504aa30
12234082b933181
13b445bba4c355
145031ad9cd917
1525358e9ed7a1
hex12795be5e431

20312442135601 has 16 divisors (see below), whose sum is σ = 25416027768960. Its totient is φ = 15770736622080.

The previous prime is 20312442135577. The next prime is 20312442135617. The reversal of 20312442135601 is 10653124421302.

It is not a de Polignac number, because 20312442135601 - 25 = 20312442135569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20312442130601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 476148256 + ... + 476190913.

It is an arithmetic number, because the mean of its divisors is an integer number (1588501735560).

Almost surely, 220312442135601 is an apocalyptic number.

It is an amenable number.

20312442135601 is a deficient number, since it is larger than the sum of its proper divisors (5103585633359).

20312442135601 is a wasteful number, since it uses less digits than its factorization.

20312442135601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952339464.

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 20312442135601 its reverse (10653124421302), we get a palindrome (30965566556903).

The spelling of 20312442135601 in words is "twenty trillion, three hundred twelve billion, four hundred forty-two million, one hundred thirty-five thousand, six hundred one".

Divisors: 1 7 11 77 277 1939 3047 21329 952339169 6666374183 10475730859 73330116013 263797949813 1846585648691 2901777447943 20312442135601