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20210023001 = 72448392003
BaseRepresentation
bin10010110100100111…
…000111101001011001
31221011110201112122102
4102310213013221121
5312342231214001
613141230533145
71313552234600
oct226447075131
957143645572
1020210023001
118631038453
123b003671b5
131ba10610bc
14d9a156a37
157d4404e6b
hex4b49c7a59

20210023001 has 12 divisors (see below), whose sum is σ = 23515118352. Its totient is φ = 17318824488.

The previous prime is 20210022991. The next prime is 20210023003. The reversal of 20210023001 is 10032001202.

It is a happy number.

It is not a de Polignac number, because 20210023001 - 226 = 20142914137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20210023003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 173666 + ... + 265668.

It is an arithmetic number, because the mean of its divisors is an integer number (1959593196).

Almost surely, 220210023001 is an apocalyptic number.

It is an amenable number.

20210023001 is a deficient number, since it is larger than the sum of its proper divisors (3305095351).

20210023001 is an equidigital number, since it uses as much as digits as its factorization.

20210023001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96500 (or 96493 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 20210023001 its reverse (10032001202), we get a palindrome (30242024203).

The spelling of 20210023001 in words is "twenty billion, two hundred ten million, twenty-three thousand, one".

Divisors: 1 7 49 4483 31381 92003 219667 644021 4508147 412449449 2887146143 20210023001