40778820872157 has 8 divisors (see below), whose sum is σ = 55397643449184. Its totient is φ = 26672939438288.

The previous prime is 40778820872093. The next prime is 40778820872161. The reversal of 40778820872157 is 75127802887704.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40778820872157 - 2⁶ = 40778820872093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40778820871157) 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, 128235285603 + ... + 128235285920.

It is an arithmetic number, because the mean of its divisors is an integer number (6924705431148).

Almost surely, 2^{40778820872157} is an apocalyptic number.

It is an amenable number.

40778820872157 is a deficient number, since it is larger than the sum of its proper divisors (14618822577027).

40778820872157 is a wasteful number, since it uses less digits than its factorization.

40778820872157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256470571579.

The product of its (nonzero) digits is 98344960, while the sum is 66.

The spelling of 40778820872157 in words is "forty trillion, seven hundred seventy-eight billion, eight hundred twenty million, eight hundred seventy-two thousand, one hundred fifty-seven".