243087973797 has 16 divisors (see below), whose sum is σ = 338243609088. Its totient is φ = 154996921200.

The previous prime is 243087973783. The next prime is 243087973801. The reversal of 243087973797 is 797379780342.

It is not a de Polignac number, because 243087973797 - 2⁷ = 243087973669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243087973097) 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, 527922 + ... + 874572.

It is an arithmetic number, because the mean of its divisors is an integer number (21140225568).

Almost surely, 2^243087973797 is an apocalyptic number.

It is an amenable number.

243087973797 is a deficient number, since it is larger than the sum of its proper divisors (95155635291).

243087973797 is a wasteful number, since it uses less digits than its factorization.

243087973797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356840.

The product of its (nonzero) digits is 112021056, while the sum is 66.

The spelling of 243087973797 in words is "two hundred forty-three billion, eighty-seven million, nine hundred seventy-three thousand, seven hundred ninety-seven".