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987129000937 = 2269143503107
BaseRepresentation
bin11100101110101010111…
…10010011001111101001
310111100221201100221001001
432113111132103033221
5112133120011012222
62033251504155001
7131213656031302
oct16272536231751
93440851327031
10987129000937
1135070364a892
1213b38b608a61
1372116852971
1435ac4c9b7a9
151aa267e6e27
hexe5d57933e9

987129000937 has 4 divisors (see below), whose sum is σ = 987172526736. Its totient is φ = 987085475140.

The previous prime is 987129000859. The next prime is 987129001007. The reversal of 987129000937 is 739000921789.

It is the 405613-rd star number.

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: 739000921789 = 1356846224753.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-987129000937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (987129000337) 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, 21728863 + ... + 21774244.

It is an arithmetic number, because the mean of its divisors is an integer number (246793131684).

Almost surely, 2987129000937 is an apocalyptic number.

It is an amenable number.

987129000937 is a deficient number, since it is larger than the sum of its proper divisors (43525799).

987129000937 is a wasteful number, since it uses less digits than its factorization.

987129000937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43525798.

The product of its (nonzero) digits is 1714608, while the sum is 55.

The spelling of 987129000937 in words is "nine hundred eighty-seven billion, one hundred twenty-nine million, nine hundred thirty-seven", and thus it is an aban number.

Divisors: 1 22691 43503107 987129000937