1290267729890 has 16 divisors (see below), whose sum is σ = 2351880420480. Its totient is φ = 509574090480.

The previous prime is 1290267729889. The next prime is 1290267729893. The reversal of 1290267729890 is 989277620921.

It is not an unprimeable number, because it can be changed into a prime (1290267729893) 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, 816624356 + ... + 816625935.

It is an arithmetic number, because the mean of its divisors is an integer number (146992526280).

Almost surely, 2^{1290267729890} is an apocalyptic number.

1290267729890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1290267729890 is a deficient number, since it is larger than the sum of its proper divisors (1061612690590).

1290267729890 is a wasteful number, since it uses less digits than its factorization.

1290267729890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1633250377.

The product of its (nonzero) digits is 13716864, while the sum is 62.

The spelling of 1290267729890 in words is "one trillion, two hundred ninety billion, two hundred sixty-seven million, seven hundred twenty-nine thousand, eight hundred ninety".