1245457009980 has 144 divisors (see below), whose sum is σ = 3936201744384. Its totient is φ = 318404292480.

The previous prime is 1245457009943. The next prime is 1245457009981. The reversal of 1245457009980 is 899007545421.

It is a happy number.

1245457009980 is a `hidden beast` number, since 1 + 2 + 4 + 545 + 7 + 0 + 0 + 9 + 98 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245457009981) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 445932 + ... + 1640051.

It is an arithmetic number, because the mean of its divisors is an integer number (27334734336).

Almost surely, 2^{1245457009980} is an apocalyptic number.

1245457009980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1245457009980 is an abundant number, since it is smaller than the sum of its proper divisors (2690744734404).

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

1245457009980 is a wasteful number, since it uses less digits than its factorization.

1245457009980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2086136 (or 2086131 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 54.

The spelling of 1245457009980 in words is "one trillion, two hundred forty-five billion, four hundred fifty-seven million, nine thousand, nine hundred eighty".