2154287756245 has 16 divisors (see below), whose sum is σ = 2610827092080. Its totient is φ = 1706310144000.

The previous prime is 2154287756239. The next prime is 2154287756273. The reversal of 2154287756245 is 5426577824512.

It can be written as a sum of positive squares in 8 ways, for example, as 33486804036 + 2120800952209 = 182994^2 + 1456297^2 .

It is not a de Polignac number, because 2154287756245 - 2¹⁷ = 2154287625173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2154287756245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22155835 + ... + 22252855.

It is an arithmetic number, because the mean of its divisors is an integer number (163176693255).

Almost surely, 2^{2154287756245} is an apocalyptic number.

It is an amenable number.

2154287756245 is a deficient number, since it is larger than the sum of its proper divisors (456539335835).

2154287756245 is a wasteful number, since it uses less digits than its factorization.

2154287756245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141096.

The product of its digits is 37632000, while the sum is 58.

The spelling of 2154287756245 in words is "two trillion, one hundred fifty-four billion, two hundred eighty-seven million, seven hundred fifty-six thousand, two hundred forty-five".