154215025545023 has 4 divisors (see below), whose sum is σ = 158382999208440. Its totient is φ = 150047051881608.

The previous prime is 154215025544981. The next prime is 154215025545041. The reversal of 154215025545023 is 320545520512451.

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

It is a cyclic number.

It is not a de Polignac number, because 154215025545023 - 2²⁶ = 154214958436159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154215025545043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2083986831653 + ... + 2083986831726.

It is an arithmetic number, because the mean of its divisors is an integer number (39595749802110).

Almost surely, 2^{154215025545023} is an apocalyptic number.

154215025545023 is a deficient number, since it is larger than the sum of its proper divisors (4167973663417).

154215025545023 is an equidigital number, since it uses as much as digits as its factorization.

154215025545023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4167973663416.

The product of its (nonzero) digits is 1200000, while the sum is 44.

The spelling of 154215025545023 in words is "one hundred fifty-four trillion, two hundred fifteen billion, twenty-five million, five hundred forty-five thousand, twenty-three".