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123013229980 = 2256150661499
BaseRepresentation
bin111001010010000101…
…0001110110110011100
3102202112000002112221211
41302210022032312130
54003412341324410
6132302252234204
711613245126314
oct1624412166634
9382460075854
10123013229980
1148195841433
121ba10a6b964
13b7a55516a4
145d4d5d4444
1532ee7ae68a
hex1ca428ed9c

123013229980 has 12 divisors (see below), whose sum is σ = 258327783000. Its totient is φ = 49205291984.

The previous prime is 123013229953. The next prime is 123013229981. The reversal of 123013229980 is 89922310321.

It is a super-2 number, since 2×1230132299802 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123013229981) 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, 3075330730 + ... + 3075330769.

It is an arithmetic number, because the mean of its divisors is an integer number (21527315250).

Almost surely, 2123013229980 is an apocalyptic number.

123013229980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123013229980 is an abundant number, since it is smaller than the sum of its proper divisors (135314553020).

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

123013229980 is a wasteful number, since it uses less digits than its factorization.

123013229980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6150661508 (or 6150661506 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 40.

The spelling of 123013229980 in words is "one hundred twenty-three billion, thirteen million, two hundred twenty-nine thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 6150661499 12301322998 24602645996 30753307495 61506614990 123013229980