40523451023 has 4 divisors (see below), whose sum is σ = 44207401128. Its totient is φ = 36839500920.

The previous prime is 40523451013. The next prime is 40523451037. The reversal of 40523451023 is 32015432504.

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 40523451023 - 2¹⁰ = 40523449999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40523451013) 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, 1841975036 + ... + 1841975057.

It is an arithmetic number, because the mean of its divisors is an integer number (11051850282).

Almost surely, 2^40523451023 is an apocalyptic number.

40523451023 is a deficient number, since it is larger than the sum of its proper divisors (3683950105).

40523451023 is a wasteful number, since it uses less digits than its factorization.

40523451023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3683950104.

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 40523451023 its reverse (32015432504), we get a palindrome (72538883527).

The spelling of 40523451023 in words is "forty billion, five hundred twenty-three million, four hundred fifty-one thousand, twenty-three".