180129214477 has 4 divisors (see below), whose sum is σ = 180414681376. Its totient is φ = 179843747580.

The previous prime is 180129214459. The next prime is 180129214483. The reversal of 180129214477 is 774412921081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 180129214477 - 2¹¹ = 180129212429 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 (180129214427) 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, 142732503 + ... + 142733764.

It is an arithmetic number, because the mean of its divisors is an integer number (45103670344).

Almost surely, 2^180129214477 is an apocalyptic number.

It is an amenable number.

180129214477 is a deficient number, since it is larger than the sum of its proper divisors (285466899).

180129214477 is an equidigital number, since it uses as much as digits as its factorization.

180129214477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285466898.

The product of its (nonzero) digits is 225792, while the sum is 46.

The spelling of 180129214477 in words is "one hundred eighty billion, one hundred twenty-nine million, two hundred fourteen thousand, four hundred seventy-seven".