97437506181 has 64 divisors (see below), whose sum is σ = 145371851520. Its totient is φ = 57808650240.

The previous prime is 97437506161. The next prime is 97437506197. The reversal of 97437506181 is 18160573479.

It is a happy number.

97437506181 is a nontrivial binomial coefficient, being equal to C(441447, 2).

It is not a de Polignac number, because 97437506181 - 2⁷ = 97437506053 is a prime.

It is a super-2 number, since 2×97437506181² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97437506161) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8381685 + ... + 8393301.

It is an arithmetic number, because the mean of its divisors is an integer number (2271435180).

Almost surely, 2^97437506181 is an apocalyptic number.

97437506181 is the 441446-th triangular number.

It is an amenable number.

97437506181 is a deficient number, since it is larger than the sum of its proper divisors (47934345339).

97437506181 is a wasteful number, since it uses less digits than its factorization.

97437506181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11814.

The product of its (nonzero) digits is 1270080, while the sum is 51.

The spelling of 97437506181 in words is "ninety-seven billion, four hundred thirty-seven million, five hundred six thousand, one hundred eighty-one".