97211066155 has 16 divisors (see below), whose sum is σ = 133344670464. Its totient is φ = 66645698400.

The previous prime is 97211066143. The next prime is 97211066207. The reversal of 97211066155 is 55166011279.

It is not a de Polignac number, because 97211066155 - 2¹⁹ = 97210541867 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 98157 + ... + 451726.

It is an arithmetic number, because the mean of its divisors is an integer number (8334041904).

Almost surely, 2^97211066155 is an apocalyptic number.

97211066155 is a deficient number, since it is larger than the sum of its proper divisors (36133604309).

97211066155 is a wasteful number, since it uses less digits than its factorization.

97211066155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554946.

The product of its (nonzero) digits is 113400, while the sum is 43.

The spelling of 97211066155 in words is "ninety-seven billion, two hundred eleven million, sixty-six thousand, one hundred fifty-five".