1247418226990 has 16 divisors (see below), whose sum is σ = 2418072255648. Its totient is φ = 460585191456.

The previous prime is 1247418226979. The next prime is 1247418226993. The reversal of 1247418226990 is 996228147421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1247418226993) 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 7 ways as a sum of consecutive naturals, for example, 4797762282 + ... + 4797762541.

It is an arithmetic number, because the mean of its divisors is an integer number (151129515978).

Almost surely, 2^{1247418226990} is an apocalyptic number.

1247418226990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1247418226990 is a deficient number, since it is larger than the sum of its proper divisors (1170654028658).

1247418226990 is a wasteful number, since it uses less digits than its factorization.

1247418226990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9595524843.

The product of its (nonzero) digits is 3483648, while the sum is 55.

The spelling of 1247418226990 in words is "one trillion, two hundred forty-seven billion, four hundred eighteen million, two hundred twenty-six thousand, nine hundred ninety".