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87450909612 = 223114315407137
BaseRepresentation
bin101000101110001111…
…0101111101110101100
322100201121022111111020
41101130132233232230
52413044413101422
6104101400254140
76214054316103
oct1213436575654
9270647274436
1087450909612
11340a6838820
1214b47171350
138328995781
14433854d03a
15241c6a595c
hex145c7afbac

87450909612 has 48 divisors (see below), whose sum is σ = 227779128192. Its totient is φ = 25883988480.

The previous prime is 87450909599. The next prime is 87450909631. The reversal of 87450909612 is 21690905478.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7697893 + ... + 7709244.

It is an arithmetic number, because the mean of its divisors is an integer number (4745398504).

Almost surely, 287450909612 is an apocalyptic number.

It is an amenable number.

87450909612 is an abundant number, since it is smaller than the sum of its proper divisors (140328218580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87450909612 is a wasteful number, since it uses less digits than its factorization.

87450909612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15407198 (or 15407196 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 51.

The spelling of 87450909612 in words is "eighty-seven billion, four hundred fifty million, nine hundred nine thousand, six hundred twelve".

Divisors: 1 2 3 4 6 11 12 22 33 43 44 66 86 129 132 172 258 473 516 946 1419 1892 2838 5676 15407137 30814274 46221411 61628548 92442822 169478507 184885644 338957014 508435521 662506891 677914028 1016871042 1325013782 1987520673 2033742084 2650027564 3975041346 7287575801 7950082692 14575151602 21862727403 29150303204 43725454806 87450909612