123543402355 has 8 divisors (see below), whose sum is σ = 148254155712. Its totient is φ = 98833339968.

The previous prime is 123543402319. The next prime is 123543402361. The reversal of 123543402355 is 553204345321.

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

It is a cyclic number.

It is not a de Polignac number, because 123543402355 - 2²⁷ = 123409184627 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383382 + ... + 627748.

It is an arithmetic number, because the mean of its divisors is an integer number (18531769464).

Almost surely, 2^123543402355 is an apocalyptic number.

123543402355 is a deficient number, since it is larger than the sum of its proper divisors (24710753357).

123543402355 is a wasteful number, since it uses less digits than its factorization.

123543402355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345485.

The product of its (nonzero) digits is 216000, while the sum is 37.

Adding to 123543402355 its reverse (553204345321), we get a palindrome (676747747676).

The spelling of 123543402355 in words is "one hundred twenty-three billion, five hundred forty-three million, four hundred two thousand, three hundred fifty-five".