1245957559440 has 80 divisors (see below), whose sum is σ = 4213601937216. Its totient is φ = 302050316800.

The previous prime is 1245957559393. The next prime is 1245957559481. The reversal of 1245957559440 is 449557595421.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1245957559440² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235974171 + ... + 235979450.

Almost surely, 2^{1245957559440} is an apocalyptic number.

1245957559440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1245957559440 is an abundant number, since it is smaller than the sum of its proper divisors (2967644377776).

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

1245957559440 is a wasteful number, since it uses less digits than its factorization.

1245957559440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471953648 (or 471953642 counting only the distinct ones).

The product of its (nonzero) digits is 45360000, while the sum is 60.

The spelling of 1245957559440 in words is "one trillion, two hundred forty-five billion, nine hundred fifty-seven million, five hundred fifty-nine thousand, four hundred forty".