97893421605 has 96 divisors (see below), whose sum is σ = 205591696128. Its totient is φ = 42065049600.

The previous prime is 97893421601. The next prime is 97893421679. The reversal of 97893421605 is 50612439879.

97893421605 is a `hidden beast` number, since 9 + 7 + 8 + 9 + 3 + 4 + 21 + 605 = 666.

It is not a de Polignac number, because 97893421605 - 2² = 97893421601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97893421601) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4331635 + ... + 4354175.

It is an arithmetic number, because the mean of its divisors is an integer number (2141580168).

It is a 2-persistent number, because it is pandigital, and so is 2⋅97893421605 = 195786843210, but 3⋅97893421605 = 293680264815 is not.

Almost surely, 2^97893421605 is an apocalyptic number.

97893421605 is the 255465-th pentagonal number.

It is an amenable number.

97893421605 is an abundant number, since it is smaller than the sum of its proper divisors (107698274523).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97893421605 is a wasteful number, since it uses less digits than its factorization.

97893421605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23387 (or 23384 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 97893421605 in words is "ninety-seven billion, eight hundred ninety-three million, four hundred twenty-one thousand, six hundred five".