40778450090 has 16 divisors (see below), whose sum is σ = 83887097472. Its totient is φ = 13981182864.

The previous prime is 40778450071. The next prime is 40778450099. The reversal of 40778450090 is 9005487704.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40778450099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291274574 + ... + 291274713.

It is an arithmetic number, because the mean of its divisors is an integer number (5242943592).

Almost surely, 2^40778450090 is an apocalyptic number.

40778450090 is an abundant number, since it is smaller than the sum of its proper divisors (43108647382).

40778450090 is a wasteful number, since it uses less digits than its factorization.

40778450090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582549301.

The product of its (nonzero) digits is 282240, while the sum is 44.

The spelling of 40778450090 in words is "forty billion, seven hundred seventy-eight million, four hundred fifty thousand, ninety".