154221053311636 has 24 divisors (see below), whose sum is σ = 271272040710440. Its totient is φ = 76715766876672.

The previous prime is 154221053311573. The next prime is 154221053311687. The reversal of 154221053311636 is 636113350122451.

It can be written as a sum of positive squares in 4 ways, for example, as 87370970395536 + 66850082916100 = 9347244^2 + 8176190^2 .

It is a junction number, because it is equal to n+sod(n) for n = 154221053311592 and 154221053311601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125753241 + ... + 126973696.

Almost surely, 2^{154221053311636} is an apocalyptic number.

It is an amenable number.

154221053311636 is a deficient number, since it is larger than the sum of its proper divisors (117050987398804).

154221053311636 is a wasteful number, since it uses less digits than its factorization.

154221053311636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252727723 (or 252727721 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 154221053311636 in words is "one hundred fifty-four trillion, two hundred twenty-one billion, fifty-three million, three hundred eleven thousand, six hundred thirty-six".