123355454351029 has 2 divisors, whose sum is σ = 123355454351030. Its totient is φ = 123355454351028.

The previous prime is 123355454350993. The next prime is 123355454351071. The reversal of 123355454351029 is 920153454553321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121095212722929 + 2260241628100 = 11004327^2 + 1503410^2 .

It is a cyclic number.

It is not a de Polignac number, because 123355454351029 - 2¹³ = 123355454342837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123355454351429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61677727175514 + 61677727175515.

It is an arithmetic number, because the mean of its divisors is an integer number (61677727175515).

Almost surely, 2^{123355454351029} is an apocalyptic number.

It is an amenable number.

123355454351029 is a deficient number, since it is larger than the sum of its proper divisors (1).

123355454351029 is an equidigital number, since it uses as much as digits as its factorization.

123355454351029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720000, while the sum is 52.

The spelling of 123355454351029 in words is "one hundred twenty-three trillion, three hundred fifty-five billion, four hundred fifty-four million, three hundred fifty-one thousand, twenty-nine".