129919154557 has 8 divisors (see below), whose sum is σ = 132902009856. Its totient is φ = 126945408432.

The previous prime is 129919154543. The next prime is 129919154609. The reversal of 129919154557 is 755451919921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129919154557 - 2¹⁵ = 129919121789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129919154857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2248438 + ... + 2305495.

It is an arithmetic number, because the mean of its divisors is an integer number (16612751232).

Almost surely, 2^129919154557 is an apocalyptic number.

It is an amenable number.

129919154557 is a deficient number, since it is larger than the sum of its proper divisors (2982855299).

129919154557 is an equidigital number, since it uses as much as digits as its factorization.

129919154557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4554587.

The product of its digits is 5103000, while the sum is 58.

The spelling of 129919154557 in words is "one hundred twenty-nine billion, nine hundred nineteen million, one hundred fifty-four thousand, five hundred fifty-seven".