197880624426 has 32 divisors (see below), whose sum is σ = 397919149056. Its totient is φ = 65601414000.

The previous prime is 197880624391. The next prime is 197880624437. The reversal of 197880624426 is 624426088791.

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, 821881 + ... + 1035011.

It is an arithmetic number, because the mean of its divisors is an integer number (12434973408).

Almost surely, 2^197880624426 is an apocalyptic number.

197880624426 is an abundant number, since it is smaller than the sum of its proper divisors (200038524630).

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

197880624426 is a wasteful number, since it uses less digits than its factorization.

197880624426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213978.

The product of its (nonzero) digits is 9289728, while the sum is 57.

The spelling of 197880624426 in words is "one hundred ninety-seven billion, eight hundred eighty million, six hundred twenty-four thousand, four hundred twenty-six".