155614440413 has 4 divisors (see below), whose sum is σ = 155675301180. Its totient is φ = 155553579648.

The previous prime is 155614440409. The next prime is 155614440431. The reversal of 155614440413 is 314044416551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73361347609 + 82253092804 = 270853^2 + 286798^2 .

It is a cyclic number.

It is not a de Polignac number, because 155614440413 - 2² = 155614440409 is a prime.

It is a super-2 number, since 2×155614440413² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155614440403) 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, 30426548 + ... + 30431661.

It is an arithmetic number, because the mean of its divisors is an integer number (38918825295).

Almost surely, 2^155614440413 is an apocalyptic number.

It is an amenable number.

155614440413 is a deficient number, since it is larger than the sum of its proper divisors (60860767).

155614440413 is an equidigital number, since it uses as much as digits as its factorization.

155614440413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60860766.

The product of its (nonzero) digits is 115200, while the sum is 38.

Adding to 155614440413 its reverse (314044416551), we get a palindrome (469658856964).

The spelling of 155614440413 in words is "one hundred fifty-five billion, six hundred fourteen million, four hundred forty thousand, four hundred thirteen".