1265106072072 has 32 divisors (see below), whose sum is σ = 3193471644480. Its totient is φ = 417607828800.

The previous prime is 1265106072059. The next prime is 1265106072073. The reversal of 1265106072072 is 2702706015621.

It is a self number, because there is not a number n which added to its sum of digits gives 1265106072072.

It is not an unprimeable number, because it can be changed into a prime (1265106072073) 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, 255884679 + ... + 255889622.

It is an arithmetic number, because the mean of its divisors is an integer number (99795988890).

Almost surely, 2^{1265106072072} is an apocalyptic number.

1265106072072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1265106072072 is an abundant number, since it is smaller than the sum of its proper divisors (1928365572408).

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

1265106072072 is a wasteful number, since it uses less digits than its factorization.

1265106072072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511774413 (or 511774409 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

The spelling of 1265106072072 in words is "one trillion, two hundred sixty-five billion, one hundred six million, seventy-two thousand, seventy-two".