1305508868040 has 64 divisors (see below), whose sum is σ = 4217797886400. Its totient is φ = 321356028672.

The previous prime is 1305508868033. The next prime is 1305508868047. The reversal of 1305508868040 is 408688055031.

It is an interprime number because it is at equal distance from previous prime (1305508868033) and next prime (1305508868047).

It is not an unprimeable number, because it can be changed into a prime (1305508868047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 418430770 + ... + 418433889.

It is an arithmetic number, because the mean of its divisors is an integer number (65903091975).

Almost surely, 2^{1305508868040} is an apocalyptic number.

1305508868040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1305508868040 is an abundant number, since it is smaller than the sum of its proper divisors (2912289018360).

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

1305508868040 is a wasteful number, since it uses less digits than its factorization.

1305508868040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836864686 (or 836864682 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 48.

The spelling of 1305508868040 in words is "one trillion, three hundred five billion, five hundred eight million, eight hundred sixty-eight thousand, forty".