87671717040 has 80 divisors (see below), whose sum is σ = 272100093408. Its totient is φ = 23351789568.

The previous prime is 87671717027. The next prime is 87671717047. The reversal of 87671717040 is 4071717678.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (87671717047) 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, 7447 + ... + 418806.

Almost surely, 2^87671717040 is an apocalyptic number.

87671717040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

87671717040 is an abundant number, since it is smaller than the sum of its proper divisors (184428376368).

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

87671717040 is a wasteful number, since it uses less digits than its factorization.

87671717040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427126 (or 427120 counting only the distinct ones).

The product of its (nonzero) digits is 460992, while the sum is 48.

The spelling of 87671717040 in words is "eighty-seven billion, six hundred seventy-one million, seven hundred seventeen thousand, forty".