154745221562 has 4 divisors (see below), whose sum is σ = 232117832346. Its totient is φ = 77372610780.

The previous prime is 154745221559. The next prime is 154745221597. The reversal of 154745221562 is 265122547451.

154745221562 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 265122547451 = 257 ⋅1031605243.

It can be written as a sum of positive squares in only one way, i.e., 124968613081 + 29776608481 = 353509^2 + 172559^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38686305389 + ... + 38686305392.

Almost surely, 2^154745221562 is an apocalyptic number.

154745221562 is a deficient number, since it is larger than the sum of its proper divisors (77372610784).

154745221562 is an equidigital number, since it uses as much as digits as its factorization.

154745221562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77372610783.

The product of its digits is 672000, while the sum is 44.

The spelling of 154745221562 in words is "one hundred fifty-four billion, seven hundred forty-five million, two hundred twenty-one thousand, five hundred sixty-two".