154113503561553 has 4 divisors (see below), whose sum is σ = 205484671415408. Its totient is φ = 102742335707700.

The previous prime is 154113503561531. The next prime is 154113503561557. The reversal of 154113503561553 is 355165305311451.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 154113503561553 - 2⁶ = 154113503561489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (154113503561557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25685583926923 + ... + 25685583926928.

It is an arithmetic number, because the mean of its divisors is an integer number (51371167853852).

Almost surely, 2^{154113503561553} is an apocalyptic number.

It is an amenable number.

154113503561553 is a deficient number, since it is larger than the sum of its proper divisors (51371167853855).

154113503561553 is an equidigital number, since it uses as much as digits as its factorization.

154113503561553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51371167853854.

The product of its (nonzero) digits is 2025000, while the sum is 48.

The spelling of 154113503561553 in words is "one hundred fifty-four trillion, one hundred thirteen billion, five hundred three million, five hundred sixty-one thousand, five hundred fifty-three".