1261906927710 has 1024 divisors, whose sum is σ = 4021523251200. Its totient is φ = 248732467200.

The previous prime is 1261906927703. The next prime is 1261906927711. The reversal of 1261906927710 is 177296091621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261906927711) by changing a digit.

It is a polite number, since it can be written in 511 ways as a sum of consecutive naturals, for example, 12251523519 + ... + 12251523621.

It is an arithmetic number, because the mean of its divisors is an integer number (3927268800).

Almost surely, 2^{1261906927710} is an apocalyptic number.

1261906927710 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1261906927710, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2010761625600).

1261906927710 is an abundant number, since it is smaller than the sum of its proper divisors (2759616323490).

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

1261906927710 is a wasteful number, since it uses less digits than its factorization.

1261906927710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329.

The product of its (nonzero) digits is 571536, while the sum is 51.

The spelling of 1261906927710 in words is "one trillion, two hundred sixty-one billion, nine hundred six million, nine hundred twenty-seven thousand, seven hundred ten".