2154104623435 has 4 divisors (see below), whose sum is σ = 2584925548128. Its totient is φ = 1723283698744.

The previous prime is 2154104623343. The next prime is 2154104623439. The reversal of 2154104623435 is 5343264014512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2154104623435 is a prime.

It is a super-3 number, since 3×2154104623435³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2154104623439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215410462339 + ... + 215410462348.

It is an arithmetic number, because the mean of its divisors is an integer number (646231387032).

Almost surely, 2^{2154104623435} is an apocalyptic number.

2154104623435 is a deficient number, since it is larger than the sum of its proper divisors (430820924693).

2154104623435 is an equidigital number, since it uses as much as digits as its factorization.

2154104623435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430820924692.

The product of its (nonzero) digits is 345600, while the sum is 40.

Adding to 2154104623435 its reverse (5343264014512), we get a palindrome (7497368637947).

The spelling of 2154104623435 in words is "two trillion, one hundred fifty-four billion, one hundred four million, six hundred twenty-three thousand, four hundred thirty-five".