161252562517001 has 8 divisors (see below), whose sum is σ = 169739902355520. Its totient is φ = 152765258964912.

The previous prime is 161252562516907. The next prime is 161252562517019. The reversal of 161252562517001 is 100715265252161.

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-161252562517001 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 (161252562217001) 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, 298211 + ... + 17960903.

It is an arithmetic number, because the mean of its divisors is an integer number (21217487794440).

Almost surely, 2^{161252562517001} is an apocalyptic number.

It is an amenable number.

161252562517001 is a deficient number, since it is larger than the sum of its proper divisors (8487339838519).

161252562517001 is a wasteful number, since it uses less digits than its factorization.

161252562517001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18143215.

The product of its (nonzero) digits is 252000, while the sum is 44.

The spelling of 161252562517001 in words is "one hundred sixty-one trillion, two hundred fifty-two billion, five hundred sixty-two million, five hundred seventeen thousand, one".