97431043455 has 16 divisors (see below), whose sum is σ = 173210744160. Its totient is φ = 51963223104.

The previous prime is 97431043441. The next prime is 97431043477. The reversal of 97431043455 is 55434013479.

97431043455 is a `hidden beast` number, since 97 + 4 + 3 + 104 + 3 + 455 = 666.

It is not a de Polignac number, because 97431043455 - 2⁴ = 97431043439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 97431043455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360855582 + ... + 360855851.

It is an arithmetic number, because the mean of its divisors is an integer number (10825671510).

Almost surely, 2^97431043455 is an apocalyptic number.

97431043455 is a deficient number, since it is larger than the sum of its proper divisors (75779700705).

97431043455 is a wasteful number, since it uses less digits than its factorization.

97431043455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721711447 (or 721711441 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 97431043455 in words is "ninety-seven billion, four hundred thirty-one million, forty-three thousand, four hundred fifty-five".