40767381033521 has 16 divisors (see below), whose sum is σ = 42221925570240. Its totient is φ = 39338357123520.

The previous prime is 40767381033473. The next prime is 40767381033553. The reversal of 40767381033521 is 12533018376704.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40767381033521 is a prime.

It is a super-3 number, since 3×40767381033521³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40767381033521.

It is not an unprimeable number, because it can be changed into a prime (40767381033571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30442766 + ... + 31753688.

It is an arithmetic number, because the mean of its divisors is an integer number (2638870348140).

Almost surely, 2^{40767381033521} is an apocalyptic number.

It is an amenable number.

40767381033521 is a deficient number, since it is larger than the sum of its proper divisors (1454544536719).

40767381033521 is a wasteful number, since it uses less digits than its factorization.

40767381033521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320656.

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 40767381033521 in words is "forty trillion, seven hundred sixty-seven billion, three hundred eighty-one million, thirty-three thousand, five hundred twenty-one".