87445903885812 has 72 divisors (see below), whose sum is σ = 229287547876800. Its totient is φ = 28821121598016.

The previous prime is 87445903885799. The next prime is 87445903885841. The reversal of 87445903885812 is 21858830954478.

87445903885812 is a `hidden beast` number, since 8 + 7 + 4 + 4 + 5 + 9 + 0 + 38 + 8 + 581 + 2 = 666.

It is a super-2 number, since 2×87445903885812² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50254512 + ... + 51965447.

Almost surely, 2^{87445903885812} is an apocalyptic number.

It is an amenable number.

87445903885812 is an abundant number, since it is smaller than the sum of its proper divisors (141841643990988).

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

87445903885812 is a wasteful number, since it uses less digits than its factorization.

87445903885812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102220150 (or 102220053 counting only the distinct ones).

The product of its (nonzero) digits is 619315200, while the sum is 72.

The spelling of 87445903885812 in words is "eighty-seven trillion, four hundred forty-five billion, nine hundred three million, eight hundred eighty-five thousand, eight hundred twelve".