97771328026 has 4 divisors (see below), whose sum is σ = 146656992042. Its totient is φ = 48885664012.

The previous prime is 97771328021. The next prime is 97771328033. The reversal of 97771328026 is 62082317779.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 92203929801 + 5567398225 = 303651^2 + 74615^2 .

It is not an unprimeable number, because it can be changed into a prime (97771328021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24442832005 + ... + 24442832008.

Almost surely, 2^97771328026 is an apocalyptic number.

97771328026 is a deficient number, since it is larger than the sum of its proper divisors (48885664016).

97771328026 is a wasteful number, since it uses less digits than its factorization.

97771328026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48885664015.

The product of its (nonzero) digits is 1778112, while the sum is 52.

The spelling of 97771328026 in words is "ninety-seven billion, seven hundred seventy-one million, three hundred twenty-eight thousand, twenty-six".