123537374203 has 2 divisors, whose sum is σ = 123537374204. Its totient is φ = 123537374202.

The previous prime is 123537374189. The next prime is 123537374243. The reversal of 123537374203 is 302473735321.

It is an a-pointer prime, because the next prime (123537374243) can be obtained adding 123537374203 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123537374203 is a prime.

It is a super-2 number, since 2×123537374203² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123537374243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61768687101 + 61768687102.

It is an arithmetic number, because the mean of its divisors is an integer number (61768687102).

Almost surely, 2^123537374203 is an apocalyptic number.

123537374203 is a deficient number, since it is larger than the sum of its proper divisors (1).

123537374203 is an equidigital number, since it uses as much as digits as its factorization.

123537374203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 317520, while the sum is 40.

The spelling of 123537374203 in words is "one hundred twenty-three billion, five hundred thirty-seven million, three hundred seventy-four thousand, two hundred three".