87747001623 has 16 divisors (see below), whose sum is σ = 130000140000. Its totient is φ = 58495939200.

The previous prime is 87747001619. The next prime is 87747001651. The reversal of 87747001623 is 32610074778.

It is not a de Polignac number, because 87747001623 - 2² = 87747001619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87747001603) 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 15 ways as a sum of consecutive naturals, for example, 1365823 + ... + 1428623.

It is an arithmetic number, because the mean of its divisors is an integer number (8125008750).

Almost surely, 2^87747001623 is an apocalyptic number.

87747001623 is a deficient number, since it is larger than the sum of its proper divisors (42253138377).

87747001623 is a wasteful number, since it uses less digits than its factorization.

87747001623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114559 (or 114553 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The spelling of 87747001623 in words is "eighty-seven billion, seven hundred forty-seven million, one thousand, six hundred twenty-three".