87873853761 has 12 divisors (see below), whose sum is σ = 129629515392. Its totient is φ = 57336131256.

The previous prime is 87873853759. The next prime is 87873853783. The reversal of 87873853761 is 16735837878.

87873853761 is a `hidden beast` number, since 8 + 7 + 8 + 7 + 38 + 537 + 61 = 666.

It is not a de Polignac number, because 87873853761 - 2¹ = 87873853759 is a prime.

It is a super-2 number, since 2×87873853761² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87873853741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103869381 + ... + 103870226.

It is an arithmetic number, because the mean of its divisors is an integer number (10802459616).

Almost surely, 2^87873853761 is an apocalyptic number.

It is an amenable number.

87873853761 is a deficient number, since it is larger than the sum of its proper divisors (41755661631).

87873853761 is a wasteful number, since it uses less digits than its factorization.

87873853761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207739660 (or 207739657 counting only the distinct ones).

The product of its digits is 47416320, while the sum is 63.

The spelling of 87873853761 in words is "eighty-seven billion, eight hundred seventy-three million, eight hundred fifty-three thousand, seven hundred sixty-one".