40345542068 has 24 divisors (see below), whose sum is σ = 76041326592. Its totient is φ = 18619673184.

The previous prime is 40345542067. The next prime is 40345542091. The reversal of 40345542068 is 86024554304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40345542067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1272221 + ... + 1303547.

It is an arithmetic number, because the mean of its divisors is an integer number (3168388608).

Almost surely, 2^40345542068 is an apocalyptic number.

It is an amenable number.

40345542068 is a deficient number, since it is larger than the sum of its proper divisors (35695784524).

40345542068 is a wasteful number, since it uses less digits than its factorization.

40345542068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56111 (or 56109 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 41.

The spelling of 40345542068 in words is "forty billion, three hundred forty-five million, five hundred forty-two thousand, sixty-eight".