2661275351700 has 216 divisors, whose sum is σ = 9534231645120. Its totient is φ = 608230771200.

The previous prime is 2661275351639. The next prime is 2661275351711. The reversal of 2661275351700 is 71535721662.

It is a happy number.

2661275351700 is a `hidden beast` number, since 2 + 6 + 6 + 127 + 5 + 3 + 517 + 0 + 0 = 666.

2661275351700 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 103061391 + ... + 103087209.

It is an arithmetic number, because the mean of its divisors is an integer number (44139961320).

Almost surely, 2^{2661275351700} is an apocalyptic number.

2661275351700 is a gapful number since it is divisible by the number (20) 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 2661275351700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4767115822560).

2661275351700 is an abundant number, since it is smaller than the sum of its proper divisors (6872956293420).

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

2661275351700 is a wasteful number, since it uses less digits than its factorization.

2661275351700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42207 (or 42197 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 45.

The spelling of 2661275351700 in words is "two trillion, six hundred sixty-one billion, two hundred seventy-five million, three hundred fifty-one thousand, seven hundred".