154613143156021 has 32 divisors (see below), whose sum is σ = 173143220253696. Its totient is φ = 136891285440000.

The previous prime is 154613143155997. The next prime is 154613143156123. The reversal of 154613143156021 is 120651341316451.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154613143156021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154613143156921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13779525 + ... + 22340581.

It is an arithmetic number, because the mean of its divisors is an integer number (5410725632928).

Almost surely, 2^{154613143156021} is an apocalyptic number.

154613143156021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

154613143156021 is a deficient number, since it is larger than the sum of its proper divisors (18530077097675).

154613143156021 is a wasteful number, since it uses less digits than its factorization.

154613143156021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8561433.

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 154613143156021 in words is "one hundred fifty-four trillion, six hundred thirteen billion, one hundred forty-three million, one hundred fifty-six thousand, twenty-one".