1021541836745 has 8 divisors (see below), whose sum is σ = 1227509004480. Its totient is φ = 816127602480.

The previous prime is 1021541836739. The next prime is 1021541836769. The reversal of 1021541836745 is 5476381451201.

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

It is not a de Polignac number, because 1021541836745 - 2²² = 1021537642441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1021541836745.

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, 138229301 + ... + 138236690.

It is an arithmetic number, because the mean of its divisors is an integer number (153438625560).

Almost surely, 2^{1021541836745} is an apocalyptic number.

It is an amenable number.

1021541836745 is a deficient number, since it is larger than the sum of its proper divisors (205967167735).

1021541836745 is an equidigital number, since it uses as much as digits as its factorization.

1021541836745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276466735.

The product of its (nonzero) digits is 806400, while the sum is 47.

The spelling of 1021541836745 in words is "one trillion, twenty-one billion, five hundred forty-one million, eight hundred thirty-six thousand, seven hundred forty-five".