97615661351605 has 16 divisors (see below), whose sum is σ = 124036568886384. Its totient is φ = 73494549867520.

The previous prime is 97615661351597. The next prime is 97615661351617. The reversal of 97615661351605 is 50615316651679.

It can be written as a sum of positive squares in 8 ways, for example, as 1061808654481 + 96553852697124 = 1030441^2 + 9826182^2 .

It is not a de Polignac number, because 97615661351605 - 2³ = 97615661351597 is a prime.

It is a super-2 number, since 2×97615661351605² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

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, 32140366 + ... + 35046175.

It is an arithmetic number, because the mean of its divisors is an integer number (7752285555399).

Almost surely, 2^{97615661351605} is an apocalyptic number.

It is an amenable number.

97615661351605 is a deficient number, since it is larger than the sum of its proper divisors (26420907534779).

97615661351605 is a wasteful number, since it uses less digits than its factorization.

97615661351605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67203656.

The product of its (nonzero) digits is 30618000, while the sum is 61.

The spelling of 97615661351605 in words is "ninety-seven trillion, six hundred fifteen billion, six hundred sixty-one million, three hundred fifty-one thousand, six hundred five".