40051306649067 has 128 divisors (see below), whose sum is σ = 68236121088000. Its totient is φ = 20790431520768.

The previous prime is 40051306649063. The next prime is 40051306649069. The reversal of 40051306649067 is 76094660315004.

It is not a de Polignac number, because 40051306649067 - 2² = 40051306649063 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (40051306649063) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1728349293 + ... + 1728372465.

It is an arithmetic number, because the mean of its divisors is an integer number (533094696000).

Almost surely, 2^{40051306649067} is an apocalyptic number.

40051306649067 is a deficient number, since it is larger than the sum of its proper divisors (28184814438933).

40051306649067 is a wasteful number, since it uses less digits than its factorization.

40051306649067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26650 (or 26636 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 51.

The spelling of 40051306649067 in words is "forty trillion, fifty-one billion, three hundred six million, six hundred forty-nine thousand, sixty-seven".