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78627072687 = 3193135798053
BaseRepresentation
bin100100100111010001…
…0011110101010101111
321111221122201010210020
41021032202132222233
52242012012311222
6100042031013223
75452311043032
oct1111642365257
9244848633706
1078627072687
1130388a29509
12132a406a213
137550874aa7
143b3c6b3019
1520a2bc565c
hex124e89eaaf

78627072687 has 8 divisors (see below), whose sum is σ = 105379289904. Its totient is φ = 52146451968.

The previous prime is 78627072683. The next prime is 78627072749.

It is a happy number.

78627072687 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 78627072687 - 22 = 78627072683 is a prime.

It is a super-5 number, since 5×786270726875 (a number of 56 digits) contains 55555 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78627072687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78627072683) 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, 67898448 + ... + 67899605.

It is an arithmetic number, because the mean of its divisors is an integer number (13172411238).

Almost surely, 278627072687 is an apocalyptic number.

78627072687 is a deficient number, since it is larger than the sum of its proper divisors (26752217217).

78627072687 is a wasteful number, since it uses less digits than its factorization.

78627072687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135798249.

The product of its (nonzero) digits is 22127616, while the sum is 60.

The spelling of 78627072687 in words is "seventy-eight billion, six hundred twenty-seven million, seventy-two thousand, six hundred eighty-seven".

Divisors: 1 3 193 579 135798053 407394159 26209024229 78627072687