1266375032340 has 192 divisors, whose sum is σ = 3892928981760. Its totient is φ = 305040384000.

The previous prime is 1266375032287. The next prime is 1266375032347. The reversal of 1266375032340 is 432305736621.

It is a junction number, because it is equal to n+sod(n) for n = 1266375032292 and 1266375032301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266375032347) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 162581166 + ... + 162588954.

It is an arithmetic number, because the mean of its divisors is an integer number (20275671780).

Almost surely, 2^{1266375032340} is an apocalyptic number.

1266375032340 is a gapful number since it is divisible by the number (10) 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 1266375032340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1946464490880).

1266375032340 is an abundant number, since it is smaller than the sum of its proper divisors (2626553949420).

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

1266375032340 is a wasteful number, since it uses less digits than its factorization.

1266375032340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9354 (or 9352 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 42.

The spelling of 1266375032340 in words is "one trillion, two hundred sixty-six billion, three hundred seventy-five million, thirty-two thousand, three hundred forty".