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87048356971 = 99277876823
BaseRepresentation
bin101000100010001111…
…1001000010001101011
322022200112211201002011
41101010133020101223
52411233334410341
6103553420220351
76201065553202
oct1210437102153
9268615751064
1087048356971
1133a0a589a94
1214a5439a6b7
13829346c344
1442dacc2239
1523e718ab81
hex14447c846b

87048356971 has 4 divisors (see below), whose sum is σ = 87049333072. Its totient is φ = 87047380872.

The previous prime is 87048356957. The next prime is 87048356977. The reversal of 87048356971 is 17965384078.

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 87048356971 - 227 = 86914139243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87048356977) 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, 339135 + ... + 537688.

It is an arithmetic number, because the mean of its divisors is an integer number (21762333268).

Almost surely, 287048356971 is an apocalyptic number.

87048356971 is a deficient number, since it is larger than the sum of its proper divisors (976101).

87048356971 is an equidigital number, since it uses as much as digits as its factorization.

87048356971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976100.

The product of its (nonzero) digits is 10160640, while the sum is 58.

The spelling of 87048356971 in words is "eighty-seven billion, forty-eight million, three hundred fifty-six thousand, nine hundred seventy-one".

Divisors: 1 99277 876823 87048356971