1206858871512 has 768 divisors, whose sum is σ = 4078698624000. Its totient is φ = 321767147520.

The previous prime is 1206858871511. The next prime is 1206858871523. The reversal of 1206858871512 is 2151788586021.

It is a happy number.

1206858871512 is a `hidden beast` number, since 1 + 2 + 0 + 6 + 8 + 58 + 8 + 71 + 512 = 666.

It is a super-2 number, since 2×1206858871512² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206858871511) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2307569283 + ... + 2307569805.

It is an arithmetic number, because the mean of its divisors is an integer number (5310805500).

Almost surely, 2^{1206858871512} is an apocalyptic number.

1206858871512 is a gapful number since it is divisible by the number (12) 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 1206858871512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2039349312000).

1206858871512 is an abundant number, since it is smaller than the sum of its proper divisors (2871839752488).

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

1206858871512 is a wasteful number, since it uses less digits than its factorization.

1206858871512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693 (or 672 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 54.

The spelling of 1206858871512 in words is "one trillion, two hundred six billion, eight hundred fifty-eight million, eight hundred seventy-one thousand, five hundred twelve".