155378459413 has 4 divisors (see below), whose sum is σ = 155379444768. Its totient is φ = 155377474060.

The previous prime is 155378459389. The next prime is 155378459417. The reversal of 155378459413 is 314954873551.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 155378459413 - 2¹⁷ = 155378328341 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 (155378459417) 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, 196993 + ... + 591238.

It is an arithmetic number, because the mean of its divisors is an integer number (38844861192).

Almost surely, 2^155378459413 is an apocalyptic number.

It is an amenable number.

155378459413 is a deficient number, since it is larger than the sum of its proper divisors (985355).

155378459413 is an equidigital number, since it uses as much as digits as its factorization.

155378459413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985354.

The product of its digits is 9072000, while the sum is 55.

The spelling of 155378459413 in words is "one hundred fifty-five billion, three hundred seventy-eight million, four hundred fifty-nine thousand, four hundred thirteen".