1581380159070 has 32 divisors (see below), whose sum is σ = 3960325965312. Its totient is φ = 403366533152.

The previous prime is 1581380159039. The next prime is 1581380159071. The reversal of 1581380159070 is 709510831851.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1581380159071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1145926962 + ... + 1145928341.

It is an arithmetic number, because the mean of its divisors is an integer number (123760186416).

Almost surely, 2^{1581380159070} is an apocalyptic number.

1581380159070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1581380159070 is an abundant number, since it is smaller than the sum of its proper divisors (2378945806242).

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

1581380159070 is a wasteful number, since it uses less digits than its factorization.

1581380159070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2291855336.

The product of its (nonzero) digits is 302400, while the sum is 48.

The spelling of 1581380159070 in words is "one trillion, five hundred eighty-one billion, three hundred eighty million, one hundred fifty-nine thousand, seventy".