65156650521612 has 96 divisors (see below), whose sum is σ = 164347234329600. Its totient is φ = 19972385495040.

The previous prime is 65156650521553. The next prime is 65156650521647. The reversal of 65156650521612 is 21612505665156.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45212764 + ... + 46631612.

It is an arithmetic number, because the mean of its divisors is an integer number (1711950357600).

Almost surely, 2^{65156650521612} is an apocalyptic number.

It is an amenable number.

65156650521612 is an abundant number, since it is smaller than the sum of its proper divisors (99190583807988).

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

65156650521612 is a wasteful number, since it uses less digits than its factorization.

65156650521612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419983 (or 1419981 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 51.

The spelling of 65156650521612 in words is "sixty-five trillion, one hundred fifty-six billion, six hundred fifty million, five hundred twenty-one thousand, six hundred twelve".