172554041661 has 8 divisors (see below), whose sum is σ = 230078205024. Its totient is φ = 115032953040.

The previous prime is 172554041659. The next prime is 172554041669. The reversal of 172554041661 is 166140455271.

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

It is not a de Polignac number, because 172554041661 - 2¹ = 172554041659 is a prime.

It is a super-3 number, since 3×172554041661³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172554041669) 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, 634386 + ... + 864611.

It is an arithmetic number, because the mean of its divisors is an integer number (28759775628).

Almost surely, 2^172554041661 is an apocalyptic number.

It is an amenable number.

172554041661 is a deficient number, since it is larger than the sum of its proper divisors (57524163363).

172554041661 is a wasteful number, since it uses less digits than its factorization.

172554041661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537371.

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 172554041661 in words is "one hundred seventy-two billion, five hundred fifty-four million, forty-one thousand, six hundred sixty-one".