1245981665260 has 24 divisors (see below), whose sum is σ = 2616631955280. Its totient is φ = 498379245504.

The previous prime is 1245981665249. The next prime is 1245981665321. The reversal of 1245981665260 is 625661895421.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59850 + ... + 1579729.

It is an arithmetic number, because the mean of its divisors is an integer number (109026331470).

Almost surely, 2^{1245981665260} is an apocalyptic number.

1245981665260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1245981665260 is an abundant number, since it is smaller than the sum of its proper divisors (1370650290020).

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

1245981665260 is a wasteful number, since it uses less digits than its factorization.

1245981665260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677585 (or 1677583 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 55.

The spelling of 1245981665260 in words is "one trillion, two hundred forty-five billion, nine hundred eighty-one million, six hundred sixty-five thousand, two hundred sixty".