39945024001 has 4 divisors (see below), whose sum is σ = 40332839872. Its totient is φ = 39557208132.

The previous prime is 39945023971. The next prime is 39945024023. The reversal of 39945024001 is 10042054993.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10042054993 = 70783 ⋅141871.

It is a cyclic number.

It is not a de Polignac number, because 39945024001 - 2¹³ = 39945015809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39945024601) 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, 193907781 + ... + 193907986.

It is an arithmetic number, because the mean of its divisors is an integer number (10083209968).

Almost surely, 2^39945024001 is an apocalyptic number.

It is an amenable number.

39945024001 is a deficient number, since it is larger than the sum of its proper divisors (387815871).

39945024001 is a wasteful number, since it uses less digits than its factorization.

39945024001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387815870.

The product of its (nonzero) digits is 38880, while the sum is 37.

Adding to 39945024001 its reverse (10042054993), we get a palindrome (49987078994).

The spelling of 39945024001 in words is "thirty-nine billion, nine hundred forty-five million, twenty-four thousand, one".