1061205261672 has 16 divisors (see below), whose sum is σ = 2653013154240. Its totient is φ = 353735087216.

The previous prime is 1061205261647. The next prime is 1061205261679. The reversal of 1061205261672 is 2761625021601.

It is a super-2 number, since 2×1061205261672² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1061205261672.

It is not an unprimeable number, because it can be changed into a prime (1061205261679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22108442928 + ... + 22108442975.

It is an arithmetic number, because the mean of its divisors is an integer number (165813322140).

Almost surely, 2^{1061205261672} is an apocalyptic number.

1061205261672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1061205261672 is an abundant number, since it is smaller than the sum of its proper divisors (1591807892568).

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

1061205261672 is a wasteful number, since it uses less digits than its factorization.

1061205261672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44216885912 (or 44216885908 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 1061205261672 in words is "one trillion, sixty-one billion, two hundred five million, two hundred sixty-one thousand, six hundred seventy-two".