1421534736756 has 144 divisors (see below), whose sum is σ = 3805701157440. Its totient is φ = 446148933120.

The previous prime is 1421534736751. The next prime is 1421534736767. The reversal of 1421534736756 is 6576374351241.

1421534736756 is a `hidden beast` number, since 1 + 4 + 2 + 1 + 534 + 7 + 36 + 75 + 6 = 666.

It is a super-2 number, since 2×1421534736756² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421534736751) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 306164971 + ... + 306169613.

It is an arithmetic number, because the mean of its divisors is an integer number (26428480260).

Almost surely, 2^{1421534736756} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421534736756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1902850578720).

1421534736756 is an abundant number, since it is smaller than the sum of its proper divisors (2384166420684).

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

1421534736756 is a wasteful number, since it uses less digits than its factorization.

1421534736756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7326 (or 7321 counting only the distinct ones).

The product of its digits is 12700800, while the sum is 54.

The spelling of 1421534736756 in words is "one trillion, four hundred twenty-one billion, five hundred thirty-four million, seven hundred thirty-six thousand, seven hundred fifty-six".