1206913115520 has 768 divisors, whose sum is σ = 4983623124480. Its totient is φ = 273396695040.

The previous prime is 1206913115497. The next prime is 1206913115543. The reversal of 1206913115520 is 255113196021.

It is a happy number.

1206913115520 is a `hidden beast` number, since 1 + 2 + 0 + 6 + 9 + 13 + 115 + 520 = 666.

It is an interprime number because it is at equal distance from previous prime (1206913115497) and next prime (1206913115543).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 123011415 + ... + 123021225.

It is an arithmetic number, because the mean of its divisors is an integer number (6489092610).

Almost surely, 2^{1206913115520} is an apocalyptic number.

1206913115520 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 1206913115520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2491811562240).

1206913115520 is an abundant number, since it is smaller than the sum of its proper divisors (3776710008960).

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

1206913115520 is an equidigital number, since it uses as much as digits as its factorization.

1206913115520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9965 (or 9941 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

The spelling of 1206913115520 in words is "one trillion, two hundred six billion, nine hundred thirteen million, one hundred fifteen thousand, five hundred twenty".