93442777861 has 4 divisors (see below), whose sum is σ = 93495011500. Its totient is φ = 93390544224.

The previous prime is 93442777849. The next prime is 93442777889. The reversal of 93442777861 is 16877724439.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16877724439 = 709 ⋅23804971.

It can be written as a sum of positive squares in 2 ways, for example, as 60579976900 + 32862800961 = 246130^2 + 181281^2 .

It is a cyclic number.

It is not a de Polignac number, because 93442777861 - 2⁵ = 93442777829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 93442777796 and 93442777805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (93442777891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26114136 + ... + 26117713.

It is an arithmetic number, because the mean of its divisors is an integer number (23373752875).

Almost surely, 2^93442777861 is an apocalyptic number.

It is an amenable number.

93442777861 is a deficient number, since it is larger than the sum of its proper divisors (52233639).

93442777861 is a wasteful number, since it uses less digits than its factorization.

93442777861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52233638.

The product of its digits is 14224896, while the sum is 58.

The spelling of 93442777861 in words is "ninety-three billion, four hundred forty-two million, seven hundred seventy-seven thousand, eight hundred sixty-one".