2154432149881 has 8 divisors (see below), whose sum is σ = 2431334088000. Its totient is φ = 1891037623440.

The previous prime is 2154432149869. The next prime is 2154432149927. The reversal of 2154432149881 is 1889412344512.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2154432149881 - 2¹³ = 2154432141689 is a prime.

It is a super-2 number, since 2×2154432149881² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2154432119881) 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, 3376852581 + ... + 3376853218.

It is an arithmetic number, because the mean of its divisors is an integer number (303916761000).

Almost surely, 2^{2154432149881} is an apocalyptic number.

It is an amenable number.

2154432149881 is a deficient number, since it is larger than the sum of its proper divisors (276901938119).

2154432149881 is a wasteful number, since it uses less digits than its factorization.

2154432149881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6753705839.

The product of its digits is 2211840, while the sum is 52.

The spelling of 2154432149881 in words is "two trillion, one hundred fifty-four billion, four hundred thirty-two million, one hundred forty-nine thousand, eight hundred eighty-one".