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87587156157 = 388313306049
BaseRepresentation
bin101000110010010011…
…0011111000010111101
322101002002200112121120
41101210212133002331
52413334302444112
6104123104421153
76220330354254
oct1214446370275
9271062615546
1087587156157
1134166736876
1214b849177b9
13834ac8a527
14434c69779b
152429619e8c
hex146499f0bd

87587156157 has 8 divisors (see below), whose sum is σ = 116796134400. Its totient is φ = 58384807680.

The previous prime is 87587156089. The next prime is 87587156177. The reversal of 87587156157 is 75165178578.

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

It is not a de Polignac number, because 87587156157 - 27 = 87587156029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87587156157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87587156177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1626532 + ... + 1679517.

It is an arithmetic number, because the mean of its divisors is an integer number (14599516800).

Almost surely, 287587156157 is an apocalyptic number.

It is an amenable number.

87587156157 is a deficient number, since it is larger than the sum of its proper divisors (29208978243).

87587156157 is a wasteful number, since it uses less digits than its factorization.

87587156157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3314883.

The product of its digits is 16464000, while the sum is 60.

The spelling of 87587156157 in words is "eighty-seven billion, five hundred eighty-seven million, one hundred fifty-six thousand, one hundred fifty-seven".

Divisors: 1 3 8831 26493 3306049 9918147 29195718719 87587156157