1351633451623 has 64 divisors (see below), whose sum is σ = 1775007360000. Its totient is φ = 999347880960.

The previous prime is 1351633451593. The next prime is 1351633451639. The reversal of 1351633451623 is 3261543361531.

It is a de Polignac number, because none of the positive numbers 2^k-1351633451623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1351633451623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351633451923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 94851003 + ... + 94865251.

It is an arithmetic number, because the mean of its divisors is an integer number (27734490000).

Almost surely, 2^{1351633451623} is an apocalyptic number.

1351633451623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1351633451623 is a deficient number, since it is larger than the sum of its proper divisors (423373908377).

1351633451623 is a wasteful number, since it uses less digits than its factorization.

1351633451623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15032.

The product of its digits is 583200, while the sum is 43.

The spelling of 1351633451623 in words is "one trillion, three hundred fifty-one billion, six hundred thirty-three million, four hundred fifty-one thousand, six hundred twenty-three".