87384487737681 has 16 divisors (see below), whose sum is σ = 133634581009920. Its totient is φ = 56377088862480.

The previous prime is 87384487737671. The next prime is 87384487737691. The reversal of 87384487737681 is 18673778448378.

87384487737681 is a `hidden beast` number, since 8 + 7 + 3 + 8 + 4 + 487 + 73 + 7 + 68 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (87384487737671) and next prime (87384487737691).

It is not a de Polignac number, because 87384487737681 - 2⁷ = 87384487737553 is a prime.

It is a super-2 number, since 2×87384487737681² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87384487737681.

It is not an unprimeable number, because it can be changed into a prime (87384487737601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52201007370 + ... + 52201009043.

It is an arithmetic number, because the mean of its divisors is an integer number (8352161313120).

Almost surely, 2^{87384487737681} is an apocalyptic number.

It is an amenable number.

87384487737681 is a deficient number, since it is larger than the sum of its proper divisors (46250093272239).

87384487737681 is a wasteful number, since it uses less digits than its factorization.

87384487737681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104402016453 (or 104402016447 counting only the distinct ones).

The product of its digits is 8497004544, while the sum is 81.

The spelling of 87384487737681 in words is "eighty-seven trillion, three hundred eighty-four billion, four hundred eighty-seven million, seven hundred thirty-seven thousand, six hundred eighty-one".