820653051872734 has 16 divisors (see below), whose sum is σ = 1231712366778000. Its totient is φ = 410082266188224.

The previous prime is 820653051872723. The next prime is 820653051872807. The reversal of 820653051872734 is 437278150356028.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 564146922 + ... + 565599730.

It is an arithmetic number, because the mean of its divisors is an integer number (76982022923625).

Almost surely, 2^{820653051872734} is an apocalyptic number.

820653051872734 is a deficient number, since it is larger than the sum of its proper divisors (411059314905266).

820653051872734 is a wasteful number, since it uses less digits than its factorization.

820653051872734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620747.

The product of its (nonzero) digits is 67737600, while the sum is 61.

The spelling of 820653051872734 in words is "eight hundred twenty trillion, six hundred fifty-three billion, fifty-one million, eight hundred seventy-two thousand, seven hundred thirty-four".