87790465555 has 16 divisors (see below), whose sum is σ = 113464882944. Its totient is φ = 64822688640.

The previous prime is 87790465517. The next prime is 87790465559. The reversal of 87790465555 is 55556409778.

It is not a de Polignac number, because 87790465555 - 2¹⁷ = 87790334483 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87790465493 and 87790465502.

It is not an unprimeable number, because it can be changed into a prime (87790465559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 555897 + ... + 696133.

It is an arithmetic number, because the mean of its divisors is an integer number (7091555184).

Almost surely, 2^87790465555 is an apocalyptic number.

87790465555 is a deficient number, since it is larger than the sum of its proper divisors (25674417389).

87790465555 is a wasteful number, since it uses less digits than its factorization.

87790465555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149886.

The product of its (nonzero) digits is 52920000, while the sum is 61.

The spelling of 87790465555 in words is "eighty-seven billion, seven hundred ninety million, four hundred sixty-five thousand, five hundred fifty-five".