40102880605778 has 8 divisors (see below), whose sum is σ = 61780113365772. Its totient is φ = 19509509483856.

The previous prime is 40102880605771. The next prime is 40102880605789. The reversal of 40102880605778 is 87750608820104.

It can be written as a sum of positive squares in 2 ways, for example, as 38184082172929 + 1918798432849 = 6179327^2 + 1385207^2 .

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

It is not an unprimeable number, because it can be changed into a prime (40102880605771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270965409425 + ... + 270965409572.

Almost surely, 2^{40102880605778} is an apocalyptic number.

40102880605778 is a deficient number, since it is larger than the sum of its proper divisors (21677232759994).

40102880605778 is a wasteful number, since it uses less digits than its factorization.

40102880605778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541930819036.

The product of its (nonzero) digits is 6021120, while the sum is 56.

The spelling of 40102880605778 in words is "forty trillion, one hundred two billion, eight hundred eighty million, six hundred five thousand, seven hundred seventy-eight".