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12883660690 = 251288366069
BaseRepresentation
bin10111111111110110…
…10000111110010010
31020020212212202221011
423333323100332102
5202341204120230
65530233321134
7634161210655
oct137773207622
936225782834
1012883660690
115511543a6a
1225b68661aa
1312a425a084
148a312389c
15506120e2a
hex2ffed0f92

12883660690 has 8 divisors (see below), whose sum is σ = 23190589260. Its totient is φ = 5153464272.

The previous prime is 12883660687. The next prime is 12883660709. The reversal of 12883660690 is 9606638821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11888195089 + 995465601 = 109033^2 + 31551^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×128836606902 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 644183025 + ... + 644183044.

Almost surely, 212883660690 is an apocalyptic number.

12883660690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12883660690 is a deficient number, since it is larger than the sum of its proper divisors (10306928570).

12883660690 is a wasteful number, since it uses less digits than its factorization.

12883660690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288366076.

The product of its (nonzero) digits is 746496, while the sum is 49.

The spelling of 12883660690 in words is "twelve billion, eight hundred eighty-three million, six hundred sixty thousand, six hundred ninety".

Divisors: 1 2 5 10 1288366069 2576732138 6441830345 12883660690