1361748908520 has 640 divisors, whose sum is σ = 6145343043840. Its totient is φ = 261193973760.

The previous prime is 1361748908519. The next prime is 1361748908543. The reversal of 1361748908520 is 258098471631.

1361748908520 is a `hidden beast` number, since 1 + 3 + 61 + 7 + 489 + 0 + 85 + 20 = 666.

It is a super-2 number, since 2×1361748908520² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 3033304 + ... + 3453176.

It is an arithmetic number, because the mean of its divisors is an integer number (9602098506).

It is a 1-persistent number, because it is pandigital, but 2⋅1361748908520 = 2723497817040 is not.

Almost surely, 2^{1361748908520} is an apocalyptic number.

1361748908520 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 1361748908520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3072671521920).

1361748908520 is an abundant number, since it is smaller than the sum of its proper divisors (4783594135320).

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

1361748908520 is a wasteful number, since it uses less digits than its factorization.

1361748908520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419927 (or 419914 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 1361748908520 in words is "one trillion, three hundred sixty-one billion, seven hundred forty-eight million, nine hundred eight thousand, five hundred twenty".