155516606001 has 6 divisors (see below), whose sum is σ = 224635097570. Its totient is φ = 103677737328.

The previous prime is 155516605967. The next prime is 155516606009. The reversal of 155516606001 is 100606615551.

It can be written as a sum of positive squares in only one way, i.e., 93283819776 + 62232786225 = 305424^2 + 249465^2 .

It is a de Polignac number, because none of the positive numbers 2^k-155516606001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (155516606009) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8639811436 + ... + 8639811453.

Almost surely, 2^155516606001 is an apocalyptic number.

It is an amenable number.

155516606001 is a deficient number, since it is larger than the sum of its proper divisors (69118491569).

155516606001 is a wasteful number, since it uses less digits than its factorization.

155516606001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17279622895 (or 17279622892 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The spelling of 155516606001 in words is "one hundred fifty-five billion, five hundred sixteen million, six hundred six thousand, one".