40001601361 has 4 divisors (see below), whose sum is σ = 40004992000. Its totient is φ = 39998210724.

The previous prime is 40001601331. The next prime is 40001601383. The reversal of 40001601361 is 16310610004.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40001601361 - 2¹⁹ = 40001077073 is a prime.

It is a super-2 number, since 2×40001601361² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40001601331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1677561 + ... + 1701238.

It is an arithmetic number, because the mean of its divisors is an integer number (10001248000).

Almost surely, 2^40001601361 is an apocalyptic number.

It is an amenable number.

40001601361 is a deficient number, since it is larger than the sum of its proper divisors (3390639).

40001601361 is a wasteful number, since it uses less digits than its factorization.

40001601361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3390638.

The product of its (nonzero) digits is 432, while the sum is 22.

The spelling of 40001601361 in words is "forty billion, one million, six hundred one thousand, three hundred sixty-one".