87748451640 has 96 divisors (see below), whose sum is σ = 300192094800. Its totient is φ = 22168028160.

The previous prime is 87748451597. The next prime is 87748451641. The reversal of 87748451640 is 4615484778.

87748451640 is a `hidden beast` number, since 8 + 7 + 7 + 4 + 84 + 516 + 40 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87748451641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6407521 + ... + 6421200.

Almost surely, 2^87748451640 is an apocalyptic number.

It is an amenable number.

87748451640 is an abundant number, since it is smaller than the sum of its proper divisors (212443643160).

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

87748451640 is a wasteful number, since it uses less digits than its factorization.

87748451640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12828757 (or 12828750 counting only the distinct ones).

The product of its (nonzero) digits is 6021120, while the sum is 54.

The spelling of 87748451640 in words is "eighty-seven billion, seven hundred forty-eight million, four hundred fifty-one thousand, six hundred forty".