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10688189437 = 19155959107
BaseRepresentation
bin10011111010001000…
…01101001111111101
31000120212201021120001
421331010031033331
5133342134030222
64524324554301
7525602053102
oct117504151775
930525637501
1010688189437
114595227a12
1220a3552991
131014452b63
14735704aa9
154284eae27
hex27d10d3fd

10688189437 has 4 divisors (see below), whose sum is σ = 10744148736. Its totient is φ = 10632230140.

The previous prime is 10688189431. The next prime is 10688189441. The reversal of 10688189437 is 73498188601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73498188601 = 379193926619.

It is a cyclic number.

It is not a de Polignac number, because 10688189437 - 23 = 10688189429 is a prime.

It is a super-2 number, since 2×106881894372 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10688189431) 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, 27979363 + ... + 27979744.

It is an arithmetic number, because the mean of its divisors is an integer number (2686037184).

Almost surely, 210688189437 is an apocalyptic number.

It is an amenable number.

10688189437 is a deficient number, since it is larger than the sum of its proper divisors (55959299).

10688189437 is an equidigital number, since it uses as much as digits as its factorization.

10688189437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55959298.

The product of its (nonzero) digits is 2322432, while the sum is 55.

The spelling of 10688189437 in words is "ten billion, six hundred eighty-eight million, one hundred eighty-nine thousand, four hundred thirty-seven".

Divisors: 1 191 55959107 10688189437