56840281387 has 16 divisors (see below), whose sum is σ = 60225850080. Its totient is φ = 53552217600.

The previous prime is 56840281321. The next prime is 56840281411. The reversal of 56840281387 is 78318204865.

It is a cyclic number.

It is not a de Polignac number, because 56840281387 - 2⁷ = 56840281259 is a prime.

It is a super-3 number, since 3×56840281387³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56840281187) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1301587 + ... + 1344547.

It is an arithmetic number, because the mean of its divisors is an integer number (3764115630).

Almost surely, 2^56840281387 is an apocalyptic number.

56840281387 is a deficient number, since it is larger than the sum of its proper divisors (3385568693).

56840281387 is a wasteful number, since it uses less digits than its factorization.

56840281387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44094.

The product of its (nonzero) digits is 2580480, while the sum is 52.

The spelling of 56840281387 in words is "fifty-six billion, eight hundred forty million, two hundred eighty-one thousand, three hundred eighty-seven".