1651051611650 has 72 divisors (see below), whose sum is σ = 3582753367680. Its totient is φ = 566074550160.

The previous prime is 1651051611607. The next prime is 1651051611661. The reversal of 1651051611650 is 561161501561.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 142010 + ... + 1822709.

It is an arithmetic number, because the mean of its divisors is an integer number (49760463440).

Almost surely, 2^{1651051611650} is an apocalyptic number.

1651051611650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1651051611650 is an abundant number, since it is smaller than the sum of its proper divisors (1931701756030).

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

1651051611650 is an frugal number, since it uses more digits than its factorization.

1651051611650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964766 (or 1964733 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 38.

The spelling of 1651051611650 in words is "one trillion, six hundred fifty-one billion, fifty-one million, six hundred eleven thousand, six hundred fifty".