1205423135632 has 20 divisors (see below), whose sum is σ = 2458428764080. Its totient is φ = 570989906208.

The previous prime is 1205423135597. The next prime is 1205423135681. The reversal of 1205423135632 is 2365313245021.

It is a junction number, because it is equal to n+sod(n) for n = 1205423135591 and 1205423135600.

It is an unprimeable number.

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, 1982603538 + ... + 1982604145.

It is an arithmetic number, because the mean of its divisors is an integer number (122921438204).

Almost surely, 2^{1205423135632} is an apocalyptic number.

It is an amenable number.

1205423135632 is an abundant number, since it is smaller than the sum of its proper divisors (1253005628448).

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

1205423135632 is a wasteful number, since it uses less digits than its factorization.

1205423135632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3965207710 (or 3965207704 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 1205423135632 in words is "one trillion, two hundred five billion, four hundred twenty-three million, one hundred thirty-five thousand, six hundred thirty-two".