40356425723 has 4 divisors (see below), whose sum is σ = 41748026640. Its totient is φ = 38964824808.

The previous prime is 40356425651. The next prime is 40356425801. The reversal of 40356425723 is 32752465304.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40356425723 - 2¹⁸ = 40356163579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40356427723) 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, 695800415 + ... + 695800472.

It is an arithmetic number, because the mean of its divisors is an integer number (10437006660).

Almost surely, 2^40356425723 is an apocalyptic number.

40356425723 is a deficient number, since it is larger than the sum of its proper divisors (1391600917).

40356425723 is a wasteful number, since it uses less digits than its factorization.

40356425723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391600916.

The product of its (nonzero) digits is 604800, while the sum is 41.

The spelling of 40356425723 in words is "forty billion, three hundred fifty-six million, four hundred twenty-five thousand, seven hundred twenty-three".