252012012266640 has 80 divisors (see below), whose sum is σ = 781395482988288. Its totient is φ = 67189590801408.

The previous prime is 252012012266579. The next prime is 252012012266699. The reversal of 252012012266640 is 46662210210252.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×252012012266640² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105160072 + ... + 107529831.

Almost surely, 2^{252012012266640} is an apocalyptic number.

252012012266640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252012012266640 is an abundant number, since it is smaller than the sum of its proper divisors (529383470721648).

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

252012012266640 is a wasteful number, since it uses less digits than its factorization.

252012012266640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212694856 (or 212694850 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

Adding to 252012012266640 its reverse (46662210210252), we get a palindrome (298674222476892).

The spelling of 252012012266640 in words is "two hundred fifty-two trillion, twelve billion, twelve million, two hundred sixty-six thousand, six hundred forty".