97884067520261 has 4 divisors (see below), whose sum is σ = 106782619113024. Its totient is φ = 88985515927500.

The previous prime is 97884067520251. The next prime is 97884067520263. The reversal of 97884067520261 is 16202576048879.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97884067520261 is a prime.

It is a super-2 number, since 2×97884067520261² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97884067520263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4449275796365 + ... + 4449275796386.

It is an arithmetic number, because the mean of its divisors is an integer number (26695654778256).

Almost surely, 2^{97884067520261} is an apocalyptic number.

It is an amenable number.

97884067520261 is a deficient number, since it is larger than the sum of its proper divisors (8898551592763).

97884067520261 is a wasteful number, since it uses less digits than its factorization.

97884067520261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8898551592762.

The product of its (nonzero) digits is 81285120, while the sum is 65.

The spelling of 97884067520261 in words is "ninety-seven trillion, eight hundred eighty-four billion, sixty-seven million, five hundred twenty thousand, two hundred sixty-one".