40123465641 has 32 divisors (see below), whose sum is σ = 68013454080. Its totient is φ = 22900848768.

The previous prime is 40123465609. The next prime is 40123465643. The reversal of 40123465641 is 14656432104.

40123465641 is a `hidden beast` number, since 4 + 0 + 1 + 2 + 3 + 4 + 6 + 5 + 641 = 666.

It is not a de Polignac number, because 40123465641 - 2⁵ = 40123465609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40123465596 and 40123465605.

It is not an unprimeable number, because it can be changed into a prime (40123465643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38115 + ... + 285831.

It is an arithmetic number, because the mean of its divisors is an integer number (2125420440).

Almost surely, 2^40123465641 is an apocalyptic number.

It is an amenable number.

40123465641 is a deficient number, since it is larger than the sum of its proper divisors (27889988439).

40123465641 is a wasteful number, since it uses less digits than its factorization.

40123465641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248590 (or 248584 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 40123465641 its reverse (14656432104), we get a palindrome (54779897745).

The spelling of 40123465641 in words is "forty billion, one hundred twenty-three million, four hundred sixty-five thousand, six hundred forty-one".