1266652761400 has 48 divisors (see below), whose sum is σ = 3171503651400. Its totient is φ = 467687172480.

The previous prime is 1266652761397. The next prime is 1266652761403. The reversal of 1266652761400 is 41672566621.

It is an interprime number because it is at equal distance from previous prime (1266652761397) and next prime (1266652761403).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266652761403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 243584470 + ... + 243589669.

Almost surely, 2^{1266652761400} is an apocalyptic number.

1266652761400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1266652761400 is an abundant number, since it is smaller than the sum of its proper divisors (1904850890000).

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

1266652761400 is a wasteful number, since it uses less digits than its factorization.

1266652761400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487174168 (or 487174159 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 1266652761400 in words is "one trillion, two hundred sixty-six billion, six hundred fifty-two million, seven hundred sixty-one thousand, four hundred".