155144647457 has 8 divisors (see below), whose sum is σ = 160633158912. Its totient is φ = 149686376400.

The previous prime is 155144647403. The next prime is 155144647481. The reversal of 155144647457 is 754746441551.

155144647457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155144647457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155144647399 and 155144647408.

It is not an unprimeable number, because it can be changed into a prime (155144643457) 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 7 ways as a sum of consecutive naturals, for example, 7549658 + ... + 7570179.

It is an arithmetic number, because the mean of its divisors is an integer number (20079144864).

Almost surely, 2^155144647457 is an apocalyptic number.

It is an amenable number.

155144647457 is a deficient number, since it is larger than the sum of its proper divisors (5488511455).

155144647457 is a wasteful number, since it uses less digits than its factorization.

155144647457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15120199.

The product of its digits is 9408000, while the sum is 53.

The spelling of 155144647457 in words is "one hundred fifty-five billion, one hundred forty-four million, six hundred forty-seven thousand, four hundred fifty-seven".