97420809558 has 32 divisors (see below), whose sum is σ = 198188622720. Its totient is φ = 31916017280.

The previous prime is 97420809539. The next prime is 97420809641. The reversal of 97420809558 is 85590802479.

It is a happy number.

It is a super-2 number, since 2×97420809558² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 97420809498 and 97420809507.

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, 1676653 + ... + 1733783.

It is an arithmetic number, because the mean of its divisors is an integer number (6193394460).

Almost surely, 2^97420809558 is an apocalyptic number.

97420809558 is an abundant number, since it is smaller than the sum of its proper divisors (100767813162).

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

97420809558 is a wasteful number, since it uses less digits than its factorization.

97420809558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62012.

The product of its (nonzero) digits is 7257600, while the sum is 57.

The spelling of 97420809558 in words is "ninety-seven billion, four hundred twenty million, eight hundred nine thousand, five hundred fifty-eight".