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20801468002 = 2712491189607
BaseRepresentation
bin10011010111110111…
…010011011001100010
31222200200122001122211
4103113313103121202
5320100133434002
613320035352334
71334323363210
oct232767233142
958620561584
1020801468002
118904982877
1240464526aa
131c66752a63
141014913cb0
1581b2d2dd7
hex4d7dd3662

20801468002 has 16 divisors (see below), whose sum is σ = 35688240000. Its totient is φ = 8907769728.

The previous prime is 20801467993. The next prime is 20801468003. The reversal of 20801468002 is 20086410802.

It is not an unprimeable number, because it can be changed into a prime (20801468003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 577318 + ... + 612289.

It is an arithmetic number, because the mean of its divisors is an integer number (2230515000).

Almost surely, 220801468002 is an apocalyptic number.

20801468002 is a deficient number, since it is larger than the sum of its proper divisors (14886771998).

20801468002 is a wasteful number, since it uses less digits than its factorization.

20801468002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190865.

The product of its (nonzero) digits is 6144, while the sum is 31.

Adding to 20801468002 its reverse (20086410802), we get a palindrome (40887878804).

The spelling of 20801468002 in words is "twenty billion, eight hundred one million, four hundred sixty-eight thousand, two".

Divisors: 1 2 7 14 1249 2498 8743 17486 1189607 2379214 8327249 16654498 1485819143 2971638286 10400734001 20801468002