87790251745 has 16 divisors (see below), whose sum is σ = 120457554048. Its totient is φ = 60169282560.

The previous prime is 87790251739. The next prime is 87790251793. The reversal of 87790251745 is 54715209778.

It is not a de Polignac number, because 87790251745 - 2¹¹ = 87790249697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 547776 + ... + 689665.

It is an arithmetic number, because the mean of its divisors is an integer number (7528597128).

Almost surely, 2^87790251745 is an apocalyptic number.

It is an amenable number.

87790251745 is a deficient number, since it is larger than the sum of its proper divisors (32667302303).

87790251745 is a wasteful number, since it uses less digits than its factorization.

87790251745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239480.

The product of its (nonzero) digits is 4939200, while the sum is 55.

The spelling of 87790251745 in words is "eighty-seven billion, seven hundred ninety million, two hundred fifty-one thousand, seven hundred forty-five".