1220748904605 has 32 divisors (see below), whose sum is σ = 1961833775616. Its totient is φ = 648188296704.

The previous prime is 1220748904597. The next prime is 1220748904619. The reversal of 1220748904605 is 5064098470221.

It is not a de Polignac number, because 1220748904605 - 2³ = 1220748904597 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34838124 + ... + 34873146.

It is an arithmetic number, because the mean of its divisors is an integer number (61307305488).

Almost surely, 2^{1220748904605} is an apocalyptic number.

1220748904605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1220748904605 is a deficient number, since it is larger than the sum of its proper divisors (741084871011).

1220748904605 is a wasteful number, since it uses less digits than its factorization.

1220748904605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45237.

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 1220748904605 in words is "one trillion, two hundred twenty billion, seven hundred forty-eight million, nine hundred four thousand, six hundred five".