143572478417 has 2 divisors, whose sum is σ = 143572478418. Its totient is φ = 143572478416.

The previous prime is 143572478381. The next prime is 143572478429. The reversal of 143572478417 is 714874275341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92024862736 + 51547615681 = 303356^2 + 227041^2 .

It is a cyclic number.

It is not a de Polignac number, because 143572478417 - 2²² = 143568284113 is a prime.

It is a super-2 number, since 2×143572478417² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (143572478477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71786239208 + 71786239209.

It is an arithmetic number, because the mean of its divisors is an integer number (71786239209).

Almost surely, 2^143572478417 is an apocalyptic number.

It is an amenable number.

143572478417 is a deficient number, since it is larger than the sum of its proper divisors (1).

143572478417 is an equidigital number, since it uses as much as digits as its factorization.

143572478417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5268480, while the sum is 53.

The spelling of 143572478417 in words is "one hundred forty-three billion, five hundred seventy-two million, four hundred seventy-eight thousand, four hundred seventeen".