1243526420166 has 16 divisors (see below), whose sum is σ = 2487091811904. Its totient is φ = 414502311464.

The previous prime is 1243526420153. The next prime is 1243526420237. The reversal of 1243526420166 is 6610246253421.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1200516 + ... + 1981991.

It is an arithmetic number, because the mean of its divisors is an integer number (155443238244).

Almost surely, 2^{1243526420166} is an apocalyptic number.

1243526420166 is an abundant number, since it is smaller than the sum of its proper divisors (1243565391738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1243526420166 is a wasteful number, since it uses less digits than its factorization.

1243526420166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3247635.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 1243526420166 in words is "one trillion, two hundred forty-three billion, five hundred twenty-six million, four hundred twenty thousand, one hundred sixty-six".