2154763489145 has 8 divisors (see below), whose sum is σ = 2585858987400. Its totient is φ = 1723715591040.

The previous prime is 2154763489141. The next prime is 2154763489199. The reversal of 2154763489145 is 5419843674512.

It can be written as a sum of positive squares in 4 ways, for example, as 29897522281 + 2124865966864 = 172909^2 + 1457692^2 .

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

It is not a de Polignac number, because 2154763489145 - 2² = 2154763489141 is a prime.

It is a super-3 number, since 3×2154763489145³ (a number of 38 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2154763489141) 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, 11800370 + ... + 11981579.

It is an arithmetic number, because the mean of its divisors is an integer number (323232373425).

Almost surely, 2^{2154763489145} is an apocalyptic number.

It is an amenable number.

2154763489145 is a deficient number, since it is larger than the sum of its proper divisors (431095498255).

2154763489145 is a wasteful number, since it uses less digits than its factorization.

2154763489145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23800075.

The product of its digits is 29030400, while the sum is 59.

The spelling of 2154763489145 in words is "two trillion, one hundred fifty-four billion, seven hundred sixty-three million, four hundred eighty-nine thousand, one hundred forty-five".