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87801130012 = 2250581433963
BaseRepresentation
bin101000111000101011…
…0101110110000011100
322101122000022112120011
41101301112232300130
52414304042130022
6104200230533004
76225536201611
oct1216126566034
9271560275504
1087801130012
11342664a3572
1215024507164
1383833c808b
14436cc76508
15243d2d4977
hex14715aec1c

87801130012 has 12 divisors (see below), whose sum is σ = 153655369336. Its totient is φ = 43899595920.

The previous prime is 87801129991. The next prime is 87801130031. The reversal of 87801130012 is 21003110878.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14658 + ... + 419305.

Almost surely, 287801130012 is an apocalyptic number.

It is an amenable number.

87801130012 is a deficient number, since it is larger than the sum of its proper divisors (65854239324).

87801130012 is a wasteful number, since it uses less digits than its factorization.

87801130012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484548 (or 484546 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 31.

The spelling of 87801130012 in words is "eighty-seven billion, eight hundred one million, one hundred thirty thousand, twelve".

Divisors: 1 2 4 50581 101162 202324 433963 867926 1735852 21950282503 43900565006 87801130012