87801605651444 has 24 divisors (see below), whose sum is σ = 158630270281728. Its totient is φ = 42479044823520.

The previous prime is 87801605651443. The next prime is 87801605651453. The reversal of 87801605651444 is 44415650610878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87801605651443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45748187 + ... + 47628770.

It is an arithmetic number, because the mean of its divisors is an integer number (6609594595072).

Almost surely, 2^{87801605651444} is an apocalyptic number.

It is an amenable number.

87801605651444 is a deficient number, since it is larger than the sum of its proper divisors (70828664630284).

87801605651444 is a wasteful number, since it uses less digits than its factorization.

87801605651444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93384575 (or 93384573 counting only the distinct ones).

The product of its (nonzero) digits is 25804800, while the sum is 59.

The spelling of 87801605651444 in words is "eighty-seven trillion, eight hundred one billion, six hundred five million, six hundred fifty-one thousand, four hundred forty-four".