29470155857 has 2 divisors, whose sum is σ = 29470155858. Its totient is φ = 29470155856.

The previous prime is 29470155839. The next prime is 29470155887. The reversal of 29470155857 is 75855107492.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29378302801 + 91853056 = 171401^2 + 9584^2 .

It is a cyclic number.

It is not a de Polignac number, because 29470155857 - 2¹⁴ = 29470139473 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 29470155799 and 29470155808.

It is not a weakly prime, because it can be changed into another prime (29470155887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14735077928 + 14735077929.

It is an arithmetic number, because the mean of its divisors is an integer number (14735077929).

Almost surely, 2^29470155857 is an apocalyptic number.

It is an amenable number.

29470155857 is a deficient number, since it is larger than the sum of its proper divisors (1).

29470155857 is an equidigital number, since it uses as much as digits as its factorization.

29470155857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528000, while the sum is 53.

The spelling of 29470155857 in words is "twenty-nine billion, four hundred seventy million, one hundred fifty-five thousand, eight hundred fifty-seven".