37442446021 has 4 divisors (see below), whose sum is σ = 37443954892. Its totient is φ = 37440937152.

The previous prime is 37442446001. The next prime is 37442446033. The reversal of 37442446021 is 12064424473.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17874353025 + 19568092996 = 133695^2 + 139886^2 .

It is a cyclic number.

It is not a de Polignac number, because 37442446021 - 2¹⁹ = 37441921733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37442446001) 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, 716580 + ... + 767053.

It is an arithmetic number, because the mean of its divisors is an integer number (9360988723).

Almost surely, 2^37442446021 is an apocalyptic number.

It is an amenable number.

37442446021 is a deficient number, since it is larger than the sum of its proper divisors (1508871).

37442446021 is a wasteful number, since it uses less digits than its factorization.

37442446021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508870.

The product of its (nonzero) digits is 129024, while the sum is 37.

The spelling of 37442446021 in words is "thirty-seven billion, four hundred forty-two million, four hundred forty-six thousand, twenty-one".