42811237997 has 4 divisors (see below), whose sum is σ = 46703168736. Its totient is φ = 38919307260.

The previous prime is 42811237957. The next prime is 42811238009. The reversal of 42811237997 is 79973211824.

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 42811237997 - 2¹⁶ = 42811172461 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 (42811237927) 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, 1945965353 + ... + 1945965374.

It is an arithmetic number, because the mean of its divisors is an integer number (11675792184).

Almost surely, 2^42811237997 is an apocalyptic number.

It is an amenable number.

42811237997 is a deficient number, since it is larger than the sum of its proper divisors (3891930739).

42811237997 is a wasteful number, since it uses less digits than its factorization.

42811237997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3891930738.

The product of its digits is 1524096, while the sum is 53.

The spelling of 42811237997 in words is "forty-two billion, eight hundred eleven million, two hundred thirty-seven thousand, nine hundred ninety-seven".