65145212123536 has 40 divisors (see below), whose sum is σ = 126257116047480. Its totient is φ = 32562732155904.

The previous prime is 65145212123479. The next prime is 65145212123539. The reversal of 65145212123536 is 63532121254156.

It can be written as a sum of positive squares in 4 ways, for example, as 2941074081936 + 62204138041600 = 1714956^2 + 7886960^2 .

It is not an unprimeable number, because it can be changed into a prime (65145212123539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 759960550 + ... + 760046266.

It is an arithmetic number, because the mean of its divisors is an integer number (3156427901187).

Almost surely, 2^{65145212123536} is an apocalyptic number.

It is an amenable number.

65145212123536 is a deficient number, since it is larger than the sum of its proper divisors (61111903923944).

65145212123536 is a wasteful number, since it uses less digits than its factorization.

65145212123536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99571 (or 99565 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 46.

The spelling of 65145212123536 in words is "sixty-five trillion, one hundred forty-five billion, two hundred twelve million, one hundred twenty-three thousand, five hundred thirty-six".