40578207977 has 8 divisors (see below), whose sum is σ = 41025014016. Its totient is φ = 40131983232.

The previous prime is 40578207973. The next prime is 40578207991. The reversal of 40578207977 is 77970287504.

It is a happy number.

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 40578207977 - 2² = 40578207973 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40578207973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4193 + ... + 284910.

It is an arithmetic number, because the mean of its divisors is an integer number (5128126752).

Almost surely, 2^40578207977 is an apocalyptic number.

It is an amenable number.

40578207977 is a deficient number, since it is larger than the sum of its proper divisors (446806039).

40578207977 is a wasteful number, since it uses less digits than its factorization.

40578207977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290647.

The product of its (nonzero) digits is 6914880, while the sum is 56.

The spelling of 40578207977 in words is "forty billion, five hundred seventy-eight million, two hundred seven thousand, nine hundred seventy-seven".