1351335635640 has 96 divisors (see below), whose sum is σ = 4392354049200. Its totient is φ = 360314058240.

The previous prime is 1351335635609. The next prime is 1351335635677. The reversal of 1351335635640 is 465365331531.

1351335635640 is a `hidden beast` number, since 1 + 3 + 5 + 1 + 3 + 3 + 5 + 635 + 6 + 4 + 0 = 666.

It is a super-2 number, since 2×1351335635640² (a number of 25 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2928196 + ... + 3358124.

Almost surely, 2^{1351335635640} is an apocalyptic number.

1351335635640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1351335635640 is an abundant number, since it is smaller than the sum of its proper divisors (3041018413560).

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

1351335635640 is a wasteful number, since it uses less digits than its factorization.

1351335635640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438677 (or 438670 counting only the distinct ones).

The product of its (nonzero) digits is 1458000, while the sum is 45.

The spelling of 1351335635640 in words is "one trillion, three hundred fifty-one billion, three hundred thirty-five million, six hundred thirty-five thousand, six hundred forty".