1081647631970 has 16 divisors (see below), whose sum is σ = 1948396302648. Its totient is φ = 432341149440.

The previous prime is 1081647631963. The next prime is 1081647632017. The reversal of 1081647631970 is 791367461801.

It can be written as a sum of positive squares in 4 ways, for example, as 426909344689 + 654738287281 = 653383^2 + 809159^2 .

It is an unprimeable number.

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, 39723629 + ... + 39750848.

Almost surely, 2^{1081647631970} is an apocalyptic number.

1081647631970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1081647631970 is a deficient number, since it is larger than the sum of its proper divisors (866748670678).

1081647631970 is a wasteful number, since it uses less digits than its factorization.

1081647631970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79475845.

The product of its (nonzero) digits is 1524096, while the sum is 53.

The spelling of 1081647631970 in words is "one trillion, eighty-one billion, six hundred forty-seven million, six hundred thirty-one thousand, nine hundred seventy".