40078905937554 has 64 divisors (see below), whose sum is σ = 90497204951040. Its totient is φ = 11721532173120.

The previous prime is 40078905937547. The next prime is 40078905937633. The reversal of 40078905937554 is 45573950987004.

It is a happy number.

40078905937554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 404877 + ... + 8962239.

It is an arithmetic number, because the mean of its divisors is an integer number (1414018827360).

Almost surely, 2^{40078905937554} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40078905937554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45248602475520).

40078905937554 is an abundant number, since it is smaller than the sum of its proper divisors (50418299013486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40078905937554 is a wasteful number, since it uses less digits than its factorization.

40078905937554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8559855.

The product of its (nonzero) digits is 190512000, while the sum is 66.

The spelling of 40078905937554 in words is "forty trillion, seventy-eight billion, nine hundred five million, nine hundred thirty-seven thousand, five hundred fifty-four".