643154141451346 has 32 divisors (see below), whose sum is σ = 1118430321488640. Its totient is φ = 271669838932800.

The previous prime is 643154141451331. The next prime is 643154141451361.

643154141451346 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (643154141451331) and next prime (643154141451361).

It is a junction number, because it is equal to n+sod(n) for n = 643154141451293 and 643154141451302.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 98541381 + ... + 104865208.

It is an arithmetic number, because the mean of its divisors is an integer number (34950947546520).

Almost surely, 2^{643154141451346} is an apocalyptic number.

643154141451346 is a deficient number, since it is larger than the sum of its proper divisors (475276180037294).

643154141451346 is a wasteful number, since it uses less digits than its factorization.

643154141451346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203409850.

The product of its digits is 8294400, while the sum is 52.

The spelling of 643154141451346 in words is "six hundred forty-three trillion, one hundred fifty-four billion, one hundred forty-one million, four hundred fifty-one thousand, three hundred forty-six".