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87381503119 = 854310228433
BaseRepresentation
bin101000101100001010…
…1111110110010001111
322100112202201021200101
41101120111332302033
52412424131044434
6104050440511531
76212252343601
oct1213025766217
9270482637611
1087381503119
1134070642689
1214b27a7b5a7
1383174a4141
14432d243171
152416545b14
hex145857ec8f

87381503119 has 4 divisors (see below), whose sum is σ = 87391740096. Its totient is φ = 87371266144.

The previous prime is 87381503117. The next prime is 87381503129. The reversal of 87381503119 is 91130518378.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87381503119 - 21 = 87381503117 is a prime.

It is a super-2 number, since 2×873815031192 (a number of 23 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 (87381503117) 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, 5105674 + ... + 5122759.

It is an arithmetic number, because the mean of its divisors is an integer number (21847935024).

Almost surely, 287381503119 is an apocalyptic number.

87381503119 is a deficient number, since it is larger than the sum of its proper divisors (10236977).

87381503119 is a wasteful number, since it uses less digits than its factorization.

87381503119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10236976.

The product of its (nonzero) digits is 181440, while the sum is 46.

The spelling of 87381503119 in words is "eighty-seven billion, three hundred eighty-one million, five hundred three thousand, one hundred nineteen".

Divisors: 1 8543 10228433 87381503119