1265474327040 has 1920 divisors, whose sum is σ = 5868344401920. Its totient is φ = 253609574400.

The previous prime is 1265474327021. The next prime is 1265474327053. The reversal of 1265474327040 is 407234745621.

1265474327040 is a `hidden beast` number, since 1 + 2 + 6 + 547 + 4 + 32 + 70 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1920).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1389104185 + ... + 1389105095.

It is an arithmetic number, because the mean of its divisors is an integer number (3056429376).

Almost surely, 2^{1265474327040} is an apocalyptic number.

1265474327040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1265474327040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2934172200960).

1265474327040 is an abundant number, since it is smaller than the sum of its proper divisors (4602870074880).

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

1265474327040 is an equidigital number, since it uses as much as digits as its factorization.

1265474327040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996 (or 968 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 45.

The spelling of 1265474327040 in words is "one trillion, two hundred sixty-five billion, four hundred seventy-four million, three hundred twenty-seven thousand, forty".