87488392878 has 48 divisors (see below), whose sum is σ = 190938056400. Its totient is φ = 28950732288.

The previous prime is 87488392877. The next prime is 87488392879. The reversal of 87488392878 is 87829388478.

87488392878 is a `hidden beast` number, since 87 + 4 + 88 + 392 + 87 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (87488392877) and next prime (87488392879).

It is a super-2 number, since 2×87488392878² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87488392877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5320926 + ... + 5337342.

It is an arithmetic number, because the mean of its divisors is an integer number (3977876175).

Almost surely, 2^87488392878 is an apocalyptic number.

87488392878 is an abundant number, since it is smaller than the sum of its proper divisors (103449663522).

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

87488392878 is a wasteful number, since it uses less digits than its factorization.

87488392878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18561 (or 18558 counting only the distinct ones).

The product of its digits is 346816512, while the sum is 72.

The spelling of 87488392878 in words is "eighty-seven billion, four hundred eighty-eight million, three hundred ninety-two thousand, eight hundred seventy-eight".