97437745209 has 16 divisors (see below), whose sum is σ = 150510492032. Its totient is φ = 54915988608.

The previous prime is 97437745193. The next prime is 97437745267. The reversal of 97437745209 is 90254773479.

It is a happy number.

It is not a de Polignac number, because 97437745209 - 2⁴ = 97437745193 is a prime.

It is a super-2 number, since 2×97437745209² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97437745109) 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, 31778554 + ... + 31781619.

It is an arithmetic number, because the mean of its divisors is an integer number (9406905752).

Almost surely, 2^97437745209 is an apocalyptic number.

It is an amenable number.

97437745209 is a deficient number, since it is larger than the sum of its proper divisors (53072746823).

97437745209 is a wasteful number, since it uses less digits than its factorization.

97437745209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63560256.

The product of its (nonzero) digits is 13335840, while the sum is 57.

The spelling of 97437745209 in words is "ninety-seven billion, four hundred thirty-seven million, seven hundred forty-five thousand, two hundred nine".