1623503136406 has 4 divisors (see below), whose sum is σ = 2435254704612. Its totient is φ = 811751568202.

The previous prime is 1623503136371. The next prime is 1623503136407. The reversal of 1623503136406 is 6046313053261.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1623503136407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405875784100 + ... + 405875784103.

It is an arithmetic number, because the mean of its divisors is an integer number (608813676153).

Almost surely, 2^{1623503136406} is an apocalyptic number.

1623503136406 is a deficient number, since it is larger than the sum of its proper divisors (811751568206).

1623503136406 is an equidigital number, since it uses as much as digits as its factorization.

1623503136406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811751568205.

The product of its (nonzero) digits is 233280, while the sum is 40.

Adding to 1623503136406 its reverse (6046313053261), we get a palindrome (7669816189667).

The spelling of 1623503136406 in words is "one trillion, six hundred twenty-three billion, five hundred three million, one hundred thirty-six thousand, four hundred six".