123078455159 has 16 divisors (see below), whose sum is σ = 144847867680. Its totient is φ = 103320821760.

The previous prime is 123078455153. The next prime is 123078455167. The reversal of 123078455159 is 951554870321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123078455159 is a prime.

It is a super-2 number, since 2×123078455159² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123078455153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6199274 + ... + 6219095.

It is an arithmetic number, because the mean of its divisors is an integer number (9052991730).

Almost surely, 2^123078455159 is an apocalyptic number.

123078455159 is a deficient number, since it is larger than the sum of its proper divisors (21769412521).

123078455159 is a wasteful number, since it uses less digits than its factorization.

123078455159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12418450.

The product of its (nonzero) digits is 1512000, while the sum is 50.

The spelling of 123078455159 in words is "one hundred twenty-three billion, seventy-eight million, four hundred fifty-five thousand, one hundred fifty-nine".