2154002822961 has 32 divisors (see below), whose sum is σ = 3237331808256. Its totient is φ = 1262106792000.

The previous prime is 2154002822947. The next prime is 2154002823013. The reversal of 2154002822961 is 1692282004512.

It is not a de Polignac number, because 2154002822961 - 2²¹ = 2154000725809 is a prime.

It is a super-2 number, since 2×2154002822961² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2154002822911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13350 + ... + 2075616.

It is an arithmetic number, because the mean of its divisors is an integer number (101166619008).

Almost surely, 2^{2154002822961} is an apocalyptic number.

It is an amenable number.

2154002822961 is a deficient number, since it is larger than the sum of its proper divisors (1083328985295).

2154002822961 is a wasteful number, since it uses less digits than its factorization.

2154002822961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2063333.

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 2154002822961 in words is "two trillion, one hundred fifty-four billion, two million, eight hundred twenty-two thousand, nine hundred sixty-one".