155405405153 has 4 divisors (see below), whose sum is σ = 157724888880. Its totient is φ = 153085921428.

The previous prime is 155405405149. The next prime is 155405405161. The reversal of 155405405153 is 351504504551.

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, and also an emirpimes, since its reverse is a distinct semiprime: 351504504551 = 151 ⋅2327844401.

It is a cyclic number.

It is not a de Polignac number, because 155405405153 - 2² = 155405405149 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155405404153) 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, 1159741763 + ... + 1159741896.

It is an arithmetic number, because the mean of its divisors is an integer number (39431222220).

Almost surely, 2^155405405153 is an apocalyptic number.

It is an amenable number.

155405405153 is a deficient number, since it is larger than the sum of its proper divisors (2319483727).

155405405153 is an equidigital number, since it uses as much as digits as its factorization.

155405405153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2319483726.

The product of its (nonzero) digits is 150000, while the sum is 38.

The spelling of 155405405153 in words is "one hundred fifty-five billion, four hundred five million, four hundred five thousand, one hundred fifty-three".