40428556347052 has 24 divisors (see below), whose sum is σ = 78854459750640. Its totient is φ = 18023876513280.

The previous prime is 40428556347043. The next prime is 40428556347059. The reversal of 40428556347052 is 25074365582404.

It is a junction number, because it is equal to n+sod(n) for n = 40428556346984 and 40428556347002.

It is not an unprimeable number, because it can be changed into a prime (40428556347059) 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, 15645724849 + ... + 15645727432.

It is an arithmetic number, because the mean of its divisors is an integer number (3285602489610).

Almost surely, 2^{40428556347052} is an apocalyptic number.

It is an amenable number.

40428556347052 is a deficient number, since it is larger than the sum of its proper divisors (38425903403588).

40428556347052 is a wasteful number, since it uses less digits than its factorization.

40428556347052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31291452321 (or 31291452319 counting only the distinct ones).

The product of its (nonzero) digits is 32256000, while the sum is 55.

The spelling of 40428556347052 in words is "forty trillion, four hundred twenty-eight billion, five hundred fifty-six million, three hundred forty-seven thousand, fifty-two".