143672473156621 has 8 divisors (see below), whose sum is σ = 144096723819000. Its totient is φ = 143248685905920.

The previous prime is 143672473156601. The next prime is 143672473156661. The reversal of 143672473156621 is 126651374276341.

It can be written as a sum of positive squares in 4 ways, for example, as 9181809022500 + 134490664134121 = 3030150^2 + 11597011^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 143672473156621 - 2³⁷ = 143535034203149 is a prime.

It is a super-2 number, since 2×143672473156621² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143672473156601) 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, 115231936 + ... + 116472073.

It is an arithmetic number, because the mean of its divisors is an integer number (18012090477375).

Almost surely, 2^{143672473156621} is an apocalyptic number.

It is an amenable number.

143672473156621 is a deficient number, since it is larger than the sum of its proper divisors (424250662379).

143672473156621 is a wasteful number, since it uses less digits than its factorization.

143672473156621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231705839.

The product of its digits is 30481920, while the sum is 58.

The spelling of 143672473156621 in words is "one hundred forty-three trillion, six hundred seventy-two billion, four hundred seventy-three million, one hundred fifty-six thousand, six hundred twenty-one".