1220554451315 has 32 divisors (see below), whose sum is σ = 1519922589696. Its totient is φ = 940328408320.

The previous prime is 1220554451269. The next prime is 1220554451327. The reversal of 1220554451315 is 5131544550221.

It is not a de Polignac number, because 1220554451315 - 2¹⁶ = 1220554385779 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 8319839 + ... + 8465271.

It is an arithmetic number, because the mean of its divisors is an integer number (47497580928).

Almost surely, 2^{1220554451315} is an apocalyptic number.

1220554451315 is a deficient number, since it is larger than the sum of its proper divisors (299368138381).

1220554451315 is a wasteful number, since it uses less digits than its factorization.

1220554451315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146059.

The product of its (nonzero) digits is 120000, while the sum is 38.

The spelling of 1220554451315 in words is "one trillion, two hundred twenty billion, five hundred fifty-four million, four hundred fifty-one thousand, three hundred fifteen".