1220040657087 has 16 divisors (see below), whose sum is σ = 1859126310912. Its totient is φ = 697159812960.

The previous prime is 1220040657061. The next prime is 1220040657133. The reversal of 1220040657087 is 7807560400221.

It is not a de Polignac number, because 1220040657087 - 2⁷ = 1220040656959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220040657047) 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 15 ways as a sum of consecutive naturals, for example, 3179133 + ... + 3542169.

It is an arithmetic number, because the mean of its divisors is an integer number (116195394432).

Almost surely, 2^{1220040657087} is an apocalyptic number.

1220040657087 is a deficient number, since it is larger than the sum of its proper divisors (639085653825).

1220040657087 is a wasteful number, since it uses less digits than its factorization.

1220040657087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523078.

The product of its (nonzero) digits is 188160, while the sum is 42.

The spelling of 1220040657087 in words is "one trillion, two hundred twenty billion, forty million, six hundred fifty-seven thousand, eighty-seven".