2154742222259 has 8 divisors (see below), whose sum is σ = 2400641238528. Its totient is φ = 1917178765960.

The previous prime is 2154742222253. The next prime is 2154742222273. The reversal of 2154742222259 is 9522222474512.

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 2154742222259 - 2¹² = 2154742218163 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2154742222253) 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, 2083889447 + ... + 2083890480.

It is an arithmetic number, because the mean of its divisors is an integer number (300080154816).

Almost surely, 2^{2154742222259} is an apocalyptic number.

2154742222259 is a deficient number, since it is larger than the sum of its proper divisors (245899016269).

2154742222259 is a wasteful number, since it uses less digits than its factorization.

2154742222259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4167779985.

The product of its digits is 1612800, while the sum is 47.

It can be divided in two parts, 215 and 4742222259, that added together give a palindrome (4742222474).

The spelling of 2154742222259 in words is "two trillion, one hundred fifty-four billion, seven hundred forty-two million, two hundred twenty-two thousand, two hundred fifty-nine".