65601651052 has 48 divisors (see below), whose sum is σ = 139096158208. Its totient is φ = 26472692160.

The previous prime is 65601651047. The next prime is 65601651091. The reversal of 65601651052 is 25015610656.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 989208 + ... + 1053439.

Almost surely, 2^65601651052 is an apocalyptic number.

65601651052 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

65601651052 is an abundant number, since it is smaller than the sum of its proper divisors (73494507156).

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

65601651052 is a wasteful number, since it uses less digits than its factorization.

65601651052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2042726 (or 2042724 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 37.

The spelling of 65601651052 in words is "sixty-five billion, six hundred one million, six hundred fifty-one thousand, fifty-two".