123413772553 has 2 divisors, whose sum is σ = 123413772554. Its totient is φ = 123413772552.

The previous prime is 123413772499. The next prime is 123413772583. The reversal of 123413772553 is 355277314321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97017921529 + 26395851024 = 311477^2 + 162468^2 .

It is an emirp because it is prime and its reverse (355277314321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123413772553 is a prime.

It is a super-2 number, since 2×123413772553² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123413772583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61706886276 + 61706886277.

It is an arithmetic number, because the mean of its divisors is an integer number (61706886277).

Almost surely, 2^123413772553 is an apocalyptic number.

It is an amenable number.

123413772553 is a deficient number, since it is larger than the sum of its proper divisors (1).

123413772553 is an equidigital number, since it uses as much as digits as its factorization.

123413772553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 529200, while the sum is 43.

The spelling of 123413772553 in words is "one hundred twenty-three billion, four hundred thirteen million, seven hundred seventy-two thousand, five hundred fifty-three".