29478145423 has 2 divisors, whose sum is σ = 29478145424. Its totient is φ = 29478145422.

The previous prime is 29478145381. The next prime is 29478145493. The reversal of 29478145423 is 32454187492.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 29478145423 - 2¹³ = 29478137231 is a prime.

It is a super-2 number, since 2×29478145423² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29478145493) 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 as a sum of consecutive naturals, namely, 14739072711 + 14739072712.

It is an arithmetic number, because the mean of its divisors is an integer number (14739072712).

Almost surely, 2^29478145423 is an apocalyptic number.

29478145423 is a deficient number, since it is larger than the sum of its proper divisors (1).

29478145423 is an equidigital number, since it uses as much as digits as its factorization.

29478145423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1935360, while the sum is 49.

The spelling of 29478145423 in words is "twenty-nine billion, four hundred seventy-eight million, one hundred forty-five thousand, four hundred twenty-three".