40768196437 has 4 divisors (see below), whose sum is σ = 41027866636. Its totient is φ = 40508526240.

The previous prime is 40768196407. The next prime is 40768196453. The reversal of 40768196437 is 73469186704.

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 9144331876 + 31623864561 = 95626^2 + 177831^2 .

It is a cyclic number.

It is not a de Polignac number, because 40768196437 - 2³¹ = 38620712789 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 (40768196407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129834864 + ... + 129835177.

It is an arithmetic number, because the mean of its divisors is an integer number (10256966659).

Almost surely, 2^40768196437 is an apocalyptic number.

It is an amenable number.

40768196437 is a deficient number, since it is larger than the sum of its proper divisors (259670199).

40768196437 is a wasteful number, since it uses less digits than its factorization.

40768196437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259670198.

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 40768196437 in words is "forty billion, seven hundred sixty-eight million, one hundred ninety-six thousand, four hundred thirty-seven".