1206001521630 has 24 divisors (see below), whose sum is σ = 3135603956472. Its totient is φ = 321600405744.

The previous prime is 1206001521601. The next prime is 1206001521661. The reversal of 1206001521630 is 361251006021.

1206001521630 is a `hidden beast` number, since 1 + 2 + 0 + 6 + 0 + 0 + 1 + 5 + 21 + 630 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1206001521594 and 1206001521603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6700008364 + ... + 6700008543.

It is an arithmetic number, because the mean of its divisors is an integer number (130650164853).

Almost surely, 2^{1206001521630} is an apocalyptic number.

1206001521630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1206001521630 is an abundant number, since it is smaller than the sum of its proper divisors (1929602434842).

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

1206001521630 is a wasteful number, since it uses less digits than its factorization.

1206001521630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13400016920 (or 13400016917 counting only the distinct ones).

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

Adding to 1206001521630 its reverse (361251006021), we get a palindrome (1567252527651).

The spelling of 1206001521630 in words is "one trillion, two hundred six billion, one million, five hundred twenty-one thousand, six hundred thirty".