1351643177623 has 8 divisors (see below), whose sum is σ = 1357381426896. Its totient is φ = 1345916236800.

The previous prime is 1351643177581. The next prime is 1351643177627. The reversal of 1351643177623 is 3267713461531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1351643177623 is a prime.

It is a super-2 number, since 2×1351643177623² (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 (1351643177627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2587513 + ... + 3065698.

It is an arithmetic number, because the mean of its divisors is an integer number (169672678362).

Almost surely, 2^{1351643177623} is an apocalyptic number.

1351643177623 is a deficient number, since it is larger than the sum of its proper divisors (5738249273).

1351643177623 is an equidigital number, since it uses as much as digits as its factorization.

1351643177623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5654225.

The product of its digits is 1905120, while the sum is 49.

The spelling of 1351643177623 in words is "one trillion, three hundred fifty-one billion, six hundred forty-three million, one hundred seventy-seven thousand, six hundred twenty-three".