97442477877 has 4 divisors (see below), whose sum is σ = 129923303840. Its totient is φ = 64961651916.

The previous prime is 97442477861. The next prime is 97442477893. The reversal of 97442477877 is 77877424479.

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 an interprime number because it is at equal distance from previous prime (97442477861) and next prime (97442477893).

It is not a de Polignac number, because 97442477877 - 2⁴ = 97442477861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97442477897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16240412977 + ... + 16240412982.

It is an arithmetic number, because the mean of its divisors is an integer number (32480825960).

Almost surely, 2^97442477877 is an apocalyptic number.

It is an amenable number.

97442477877 is a deficient number, since it is larger than the sum of its proper divisors (32480825963).

97442477877 is a wasteful number, since it uses less digits than its factorization.

97442477877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32480825962.

The product of its digits is 154893312, while the sum is 66.

The spelling of 97442477877 in words is "ninety-seven billion, four hundred forty-two million, four hundred seventy-seven thousand, eight hundred seventy-seven".