40720662787 has 8 divisors (see below), whose sum is σ = 46746592256. Its totient is φ = 34746906312.

The previous prime is 40720662739. The next prime is 40720662821. The reversal of 40720662787 is 78726602704.

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 40720662787 - 2⁷ = 40720662659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40720662787.

It is not an unprimeable number, because it can be changed into a prime (40720662737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13041573 + ... + 13044694.

It is an arithmetic number, because the mean of its divisors is an integer number (5843324032).

Almost surely, 2^40720662787 is an apocalyptic number.

40720662787 is a deficient number, since it is larger than the sum of its proper divisors (6025929469).

40720662787 is a wasteful number, since it uses less digits than its factorization.

40720662787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26086497.

The product of its (nonzero) digits is 1580544, while the sum is 49.

The spelling of 40720662787 in words is "forty billion, seven hundred twenty million, six hundred sixty-two thousand, seven hundred eighty-seven".