129260262451 has 4 divisors (see below), whose sum is σ = 129265101504. Its totient is φ = 129255423400.

The previous prime is 129260262449. The next prime is 129260262457. The reversal of 129260262451 is 154262062921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154262062921 = 259213 ⋅595117.

It is a cyclic number.

It is not a de Polignac number, because 129260262451 - 2¹ = 129260262449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129260262457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2379235 + ... + 2432956.

It is an arithmetic number, because the mean of its divisors is an integer number (32316275376).

Almost surely, 2^129260262451 is an apocalyptic number.

129260262451 is a deficient number, since it is larger than the sum of its proper divisors (4839053).

129260262451 is an equidigital number, since it uses as much as digits as its factorization.

129260262451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4839052.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 129260262451 in words is "one hundred twenty-nine billion, two hundred sixty million, two hundred sixty-two thousand, four hundred fifty-one".