97042687513 has 4 divisors (see below), whose sum is σ = 97043822260. Its totient is φ = 97041552768.

The previous prime is 97042687481. The next prime is 97042687523. The reversal of 97042687513 is 31578624079.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31578624079 = 51769 ⋅609991.

It can be written as a sum of positive squares in 2 ways, for example, as 73808392329 + 23234295184 = 271677^2 + 152428^2 .

It is a cyclic number.

It is not a de Polignac number, because 97042687513 - 2⁵ = 97042687481 is a prime.

It is a super-3 number, since 3×97042687513³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97042687523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427620 + ... + 613957.

It is an arithmetic number, because the mean of its divisors is an integer number (24260955565).

It is a 2-persistent number, because it is pandigital, and so is 2⋅97042687513 = 194085375026, but 3⋅97042687513 = 291128062539 is not.

Almost surely, 2^97042687513 is an apocalyptic number.

It is an amenable number.

97042687513 is a deficient number, since it is larger than the sum of its proper divisors (1134747).

97042687513 is a wasteful number, since it uses less digits than its factorization.

97042687513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134746.

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 97042687513 in words is "ninety-seven billion, forty-two million, six hundred eighty-seven thousand, five hundred thirteen".