40007273633161 has 2 divisors, whose sum is σ = 40007273633162. Its totient is φ = 40007273633160.

The previous prime is 40007273633149. The next prime is 40007273633293. The reversal of 40007273633161 is 16133637270004.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39615140931136 + 392132702025 = 6294056^2 + 626205^2 .

It is a cyclic number.

It is not a de Polignac number, because 40007273633161 - 2²⁷ = 40007139415433 is a prime.

It is not a weakly prime, because it can be changed into another prime (40007273633111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20003636816580 + 20003636816581.

It is an arithmetic number, because the mean of its divisors is an integer number (20003636816581).

Almost surely, 2^{40007273633161} is an apocalyptic number.

It is an amenable number.

40007273633161 is a deficient number, since it is larger than the sum of its proper divisors (1).

40007273633161 is an equidigital number, since it uses as much as digits as its factorization.

40007273633161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 43.

The spelling of 40007273633161 in words is "forty trillion, seven billion, two hundred seventy-three million, six hundred thirty-three thousand, one hundred sixty-one".