605155121551506 has 8 divisors (see below), whose sum is σ = 1210310243103024. Its totient is φ = 201718373850500.

The previous prime is 605155121551489. The next prime is 605155121551523.

It is a happy number.

605155121551506 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (605155121551489) and next prime (605155121551523).

It is a sphenic number, since it is the product of 3 distinct primes.

605155121551506 is an admirable number.

It is a super-2 number, since 2×605155121551506² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50429593462620 + ... + 50429593462631.

It is an arithmetic number, because the mean of its divisors is an integer number (151288780387878).

Almost surely, 2^{605155121551506} is an apocalyptic number.

605155121551506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

605155121551506 is a wasteful number, since it uses less digits than its factorization.

605155121551506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100859186925256.

The product of its (nonzero) digits is 1125000, while the sum is 48.

The spelling of 605155121551506 in words is "six hundred five trillion, one hundred fifty-five billion, one hundred twenty-one million, five hundred fifty-one thousand, five hundred six".