143155802961 has 6 divisors (see below), whose sum is σ = 206780604290. Its totient is φ = 95437201968.

The previous prime is 143155802953. The next prime is 143155802983. The reversal of 143155802961 is 169208551341.

It is a happy number.

143155802961 is a `hidden beast` number, since 1 + 4 + 3 + 1 + 5 + 580 + 2 + 9 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 124647833025 + 18507969936 = 353055^2 + 136044^2 .

It is not a de Polignac number, because 143155802961 - 2³ = 143155802953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143155802941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7953100156 + ... + 7953100173.

Almost surely, 2^143155802961 is an apocalyptic number.

It is an amenable number.

143155802961 is a deficient number, since it is larger than the sum of its proper divisors (63624801329).

143155802961 is a wasteful number, since it uses less digits than its factorization.

143155802961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15906200335 (or 15906200332 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 143155802961 in words is "one hundred forty-three billion, one hundred fifty-five million, eight hundred two thousand, nine hundred sixty-one".