155445641063603 has 16 divisors (see below), whose sum is σ = 171340537159680. Its totient is φ = 139844916806400.

The previous prime is 155445641063591. The next prime is 155445641063617. The reversal of 155445641063603 is 306360146544551.

It is a cyclic number.

It is not a de Polignac number, because 155445641063603 - 2⁶ = 155445641063539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155445640063603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5510798 + ... + 18473228.

It is an arithmetic number, because the mean of its divisors is an integer number (10708783572480).

Almost surely, 2^{155445641063603} is an apocalyptic number.

155445641063603 is a deficient number, since it is larger than the sum of its proper divisors (15894896096077).

155445641063603 is a wasteful number, since it uses less digits than its factorization.

155445641063603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12973778.

The product of its (nonzero) digits is 15552000, while the sum is 53.

The spelling of 155445641063603 in words is "one hundred fifty-five trillion, four hundred forty-five billion, six hundred forty-one million, sixty-three thousand, six hundred three".