372042036581 has 4 divisors (see below), whose sum is σ = 373680988512. Its totient is φ = 370403084652.

The previous prime is 372042036563. The next prime is 372042036607. The reversal of 372042036581 is 185630240273.

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 a de Polignac number, because none of the positive numbers 2^k-372042036581 is a prime.

It is a super-2 number, since 2×372042036581² (a number of 24 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 (372042036281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 819475625 + ... + 819476078.

It is an arithmetic number, because the mean of its divisors is an integer number (93420247128).

Almost surely, 2^372042036581 is an apocalyptic number.

It is an amenable number.

372042036581 is a deficient number, since it is larger than the sum of its proper divisors (1638951931).

372042036581 is a wasteful number, since it uses less digits than its factorization.

372042036581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638951930.

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 372042036581 in words is "three hundred seventy-two billion, forty-two million, thirty-six thousand, five hundred eighty-one".