1001550156161 has 8 divisors (see below), whose sum is σ = 1002594315840. Its totient is φ = 1000506262608.

The previous prime is 1001550156127. The next prime is 1001550156179. The reversal of 1001550156161 is 1616510551001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001550156161 is a prime.

It is a super-2 number, since 2×1001550156161² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001550176161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7965500 + ... + 8090258.

It is an arithmetic number, because the mean of its divisors is an integer number (125324289480).

Almost surely, 2^{1001550156161} is an apocalyptic number.

It is an amenable number.

1001550156161 is a deficient number, since it is larger than the sum of its proper divisors (1044159679).

1001550156161 is a wasteful number, since it uses less digits than its factorization.

1001550156161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133063.

The product of its (nonzero) digits is 4500, while the sum is 32.

The spelling of 1001550156161 in words is "one trillion, one billion, five hundred fifty million, one hundred fifty-six thousand, one hundred sixty-one".