87393221163701 has 18 divisors (see below), whose sum is σ = 94400233734870. Its totient is φ = 80896950396240.

The previous prime is 87393221163691. The next prime is 87393221163709. The reversal of 87393221163701 is 10736112239378.

It can be written as a sum of positive squares in only one way, i.e., 56026332785476 + 31366888378225 = 7485074^2 + 5600615^2 .

It is not a de Polignac number, because 87393221163701 - 2¹⁰ = 87393221162677 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87393221163709) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 85446146 + ... + 86462883.

It is an arithmetic number, because the mean of its divisors is an integer number (5244457429715).

Almost surely, 2^{87393221163701} is an apocalyptic number.

It is an amenable number.

87393221163701 is a deficient number, since it is larger than the sum of its proper divisors (7007012571169).

87393221163701 is a wasteful number, since it uses less digits than its factorization.

87393221163701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171909137 (or 171909083 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 53.

The spelling of 87393221163701 in words is "eighty-seven trillion, three hundred ninety-three billion, two hundred twenty-one million, one hundred sixty-three thousand, seven hundred one".