6155740405 has 4 divisors (see below), whose sum is σ = 7386888492. Its totient is φ = 4924592320.

The previous prime is 6155740387. The next prime is 6155740411. The reversal of 6155740405 is 5040475516.

It is a happy number.

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 653364721 + 5502375684 = 25561^2 + 74178^2 .

It is not a de Polignac number, because 6155740405 - 2¹¹ = 6155738357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 615574036 + ... + 615574045.

It is an arithmetic number, because the mean of its divisors is an integer number (1846722123).

Almost surely, 2^6155740405 is an apocalyptic number.

It is an amenable number.

6155740405 is a deficient number, since it is larger than the sum of its proper divisors (1231148087).

6155740405 is a wasteful number, since it uses less digits than its factorization.

6155740405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231148086.

The product of its (nonzero) digits is 84000, while the sum is 37.

The square root of 6155740405 is about 78458.5266558071. The cubic root of 6155740405 is about 1832.7086611372.

The spelling of 6155740405 in words is "six billion, one hundred fifty-five million, seven hundred forty thousand, four hundred five".