1230855783877 has 4 divisors (see below), whose sum is σ = 1239116561100. Its totient is φ = 1222595006656.

The previous prime is 1230855783823. The next prime is 1230855783907. The reversal of 1230855783877 is 7783875580321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 45966931201 + 1184888852676 = 214399^2 + 1088526^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230855783877 - 2¹⁹ = 1230855259589 is a prime.

It is a super-2 number, since 2×1230855783877² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230855783977) 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, 4130388388 + ... + 4130388685.

It is an arithmetic number, because the mean of its divisors is an integer number (309779140275).

Almost surely, 2^{1230855783877} is an apocalyptic number.

It is an amenable number.

1230855783877 is a deficient number, since it is larger than the sum of its proper divisors (8260777223).

1230855783877 is an equidigital number, since it uses as much as digits as its factorization.

1230855783877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8260777222.

The product of its (nonzero) digits is 79027200, while the sum is 64.

The spelling of 1230855783877 in words is "one trillion, two hundred thirty billion, eight hundred fifty-five million, seven hundred eighty-three thousand, eight hundred seventy-seven".