1230136289506 has 4 divisors (see below), whose sum is σ = 1845204434262. Its totient is φ = 615068144752.

The previous prime is 1230136289479. The next prime is 1230136289507. The reversal of 1230136289506 is 6059826310321.

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., 817405851025 + 412730438481 = 904105^2 + 642441^2 .

It is not an unprimeable number, because it can be changed into a prime (1230136289507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307534072375 + ... + 307534072378.

Almost surely, 2^{1230136289506} is an apocalyptic number.

1230136289506 is a deficient number, since it is larger than the sum of its proper divisors (615068144756).

1230136289506 is an equidigital number, since it uses as much as digits as its factorization.

1230136289506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615068144755.

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 1230136289506 in words is "one trillion, two hundred thirty billion, one hundred thirty-six million, two hundred eighty-nine thousand, five hundred six".