86251561555380 has 96 divisors (see below), whose sum is σ = 264489795158400. Its totient is φ = 20871303541248.

The previous prime is 86251561555351. The next prime is 86251561555387. The reversal of 86251561555380 is 8355516515268.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86251561555387) 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 31 ways as a sum of consecutive naturals, for example, 937063515 + ... + 937155554.

It is an arithmetic number, because the mean of its divisors is an integer number (2755102032900).

Almost surely, 2^{86251561555380} is an apocalyptic number.

It is an amenable number.

86251561555380 is an abundant number, since it is smaller than the sum of its proper divisors (178238233603020).

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

86251561555380 is a wasteful number, since it uses less digits than its factorization.

86251561555380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874219153 (or 1874219151 counting only the distinct ones).

The product of its (nonzero) digits is 43200000, while the sum is 60.

The spelling of 86251561555380 in words is "eighty-six trillion, two hundred fifty-one billion, five hundred sixty-one million, five hundred fifty-five thousand, three hundred eighty".