1261060214340 has 48 divisors (see below), whose sum is σ = 3533174346240. Its totient is φ = 336072652800.

The previous prime is 1261060214291. The next prime is 1261060214341. The reversal of 1261060214340 is 434120601621.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1261060214298 and 1261060214307.

It is not an unprimeable number, because it can be changed into a prime (1261060214341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6467860 + ... + 6659979.

It is an arithmetic number, because the mean of its divisors is an integer number (73607798880).

Almost surely, 2^{1261060214340} is an apocalyptic number.

1261060214340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1261060214340 is an abundant number, since it is smaller than the sum of its proper divisors (2272114131900).

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

1261060214340 is a wasteful number, since it uses less digits than its factorization.

1261060214340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13129452 (or 13129450 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

Adding to 1261060214340 its reverse (434120601621), we get a palindrome (1695180815961).

The spelling of 1261060214340 in words is "one trillion, two hundred sixty-one billion, sixty million, two hundred fourteen thousand, three hundred forty".