7426438216154 has 4 divisors (see below), whose sum is σ = 11139657324234. Its totient is φ = 3713219108076.

The previous prime is 7426438216147. The next prime is 7426438216157. The reversal of 7426438216154 is 4516128346247.

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

It can be written as a sum of positive squares in only one way, i.e., 6761960542129 + 664477674025 = 2600377^2 + 815155^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7426438216096 and 7426438216105.

It is not an unprimeable number, because it can be changed into a prime (7426438216157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1856609554037 + ... + 1856609554040.

Almost surely, 2^{7426438216154} is an apocalyptic number.

7426438216154 is a deficient number, since it is larger than the sum of its proper divisors (3713219108080).

7426438216154 is a wasteful number, since it uses less digits than its factorization.

7426438216154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3713219108079.

The product of its digits is 7741440, while the sum is 53.

The spelling of 7426438216154 in words is "seven trillion, four hundred twenty-six billion, four hundred thirty-eight million, two hundred sixteen thousand, one hundred fifty-four".