1021454683378 has 8 divisors (see below), whose sum is σ = 1532776132080. Its totient is φ = 510529306020.

The previous prime is 1021454683369. The next prime is 1021454683391. The reversal of 1021454683378 is 8733864541201.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 99011388 + ... + 99021703.

It is an arithmetic number, because the mean of its divisors is an integer number (191597016510).

Almost surely, 2^{1021454683378} is an apocalyptic number.

1021454683378 is a deficient number, since it is larger than the sum of its proper divisors (511321448702).

1021454683378 is a wasteful number, since it uses less digits than its factorization.

1021454683378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198035672.

The product of its (nonzero) digits is 3870720, while the sum is 52.

The spelling of 1021454683378 in words is "one trillion, twenty-one billion, four hundred fifty-four million, six hundred eighty-three thousand, three hundred seventy-eight".