1320101156340 has 120 divisors (see below), whose sum is σ = 4167584132712. Its totient is φ = 349784697600.

The previous prime is 1320101156323. The next prime is 1320101156443. The reversal of 1320101156340 is 436511010231.

It is a happy number.

1320101156340 is a `hidden beast` number, since 1 + 3 + 2 + 0 + 10 + 1 + 15 + 634 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 193862328804 + 1126238827536 = 440298^2 + 1061244^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2340811 + ... + 2849490.

Almost surely, 2^{1320101156340} is an apocalyptic number.

1320101156340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320101156340 is an abundant number, since it is smaller than the sum of its proper divisors (2847482976372).

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

1320101156340 is a wasteful number, since it uses less digits than its factorization.

1320101156340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5190479 (or 5190468 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 1320101156340 its reverse (436511010231), we get a palindrome (1756612166571).

The spelling of 1320101156340 in words is "one trillion, three hundred twenty billion, one hundred one million, one hundred fifty-six thousand, three hundred forty".