161037325801 has 8 divisors (see below), whose sum is σ = 175689021600. Its totient is φ = 146387619840.

The previous prime is 161037325789. The next prime is 161037325811. The reversal of 161037325801 is 108523730161.

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

It is not a de Polignac number, because 161037325801 - 2⁹ = 161037325289 is a prime.

It is a super-2 number, since 2×161037325801² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161037325811) 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, 325656 + ... + 654313.

It is an arithmetic number, because the mean of its divisors is an integer number (21961127700).

Almost surely, 2^161037325801 is an apocalyptic number.

161037325801 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

161037325801 is a deficient number, since it is larger than the sum of its proper divisors (14651695799).

161037325801 is a wasteful number, since it uses less digits than its factorization.

161037325801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994919.

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 161037325801 in words is "one hundred sixty-one billion, thirty-seven million, three hundred twenty-five thousand, eight hundred one".