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20013141901 = 129715430333
BaseRepresentation
bin10010101000111000…
…000100111110001101
31220122202020221112211
4102220320010332031
5311441331020101
613105515030421
71305641620324
oct225070047615
956582227484
1020013141901
11853a9957a5
123a6643b411
131b6c3295cc
14d7bd470bb
157c1eb4c51
hex4a8e04f8d

20013141901 has 4 divisors (see below), whose sum is σ = 20028573532. Its totient is φ = 19997710272.

The previous prime is 20013141877. The next prime is 20013141923. The reversal of 20013141901 is 10914131002.

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 18682789225 + 1330352676 = 136685^2 + 36474^2 .

It is a cyclic number.

It is not a de Polignac number, because 20013141901 - 213 = 20013133709 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 (20013141971) 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, 7713870 + ... + 7716463.

It is an arithmetic number, because the mean of its divisors is an integer number (5007143383).

Almost surely, 220013141901 is an apocalyptic number.

It is an amenable number.

20013141901 is a deficient number, since it is larger than the sum of its proper divisors (15431631).

20013141901 is a wasteful number, since it uses less digits than its factorization.

20013141901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15431630.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 20013141901 its reverse (10914131002), we get a palindrome (30927272903).

The spelling of 20013141901 in words is "twenty billion, thirteen million, one hundred forty-one thousand, nine hundred one".

Divisors: 1 1297 15430333 20013141901