2154145229977 has 32 divisors (see below), whose sum is σ = 2370107900160. Its totient is φ = 1945910891520.

The previous prime is 2154145229933. The next prime is 2154145229983. The reversal of 2154145229977 is 7799225414512.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2154145229977 - 2¹⁹ = 2154144705689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2154145229077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58580277 + ... + 58617037.

It is an arithmetic number, because the mean of its divisors is an integer number (74065871880).

Almost surely, 2^{2154145229977} is an apocalyptic number.

It is an amenable number.

2154145229977 is a deficient number, since it is larger than the sum of its proper divisors (215962670183).

2154145229977 is a wasteful number, since it uses less digits than its factorization.

2154145229977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37393.

The product of its digits is 12700800, while the sum is 58.

The spelling of 2154145229977 in words is "two trillion, one hundred fifty-four billion, one hundred forty-five million, two hundred twenty-nine thousand, nine hundred seventy-seven".