87453867017780 has 48 divisors (see below), whose sum is σ = 190048301730000. Its totient is φ = 33764208393216.

The previous prime is 87453867017779. The next prime is 87453867017801. The reversal of 87453867017780 is 8771076835478.

It can be written as a sum of positive squares in 8 ways, for example, as 895479904804 + 86558387112976 = 946298^2 + 9303676^2 .

It is a super-2 number, since 2×87453867017780² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (71) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 22958135 + ... + 26494974.

It is an arithmetic number, because the mean of its divisors is an integer number (3959339619375).

Almost surely, 2^{87453867017780} is an apocalyptic number.

It is an amenable number.

87453867017780 is an abundant number, since it is smaller than the sum of its proper divisors (102594434712220).

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

87453867017780 is a wasteful number, since it uses less digits than its factorization.

87453867017780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49456196 (or 49456194 counting only the distinct ones).

The product of its (nonzero) digits is 442552320, while the sum is 71.

The spelling of 87453867017780 in words is "eighty-seven trillion, four hundred fifty-three billion, eight hundred sixty-seven million, seventeen thousand, seven hundred eighty".