1321405055415 has 48 divisors (see below), whose sum is σ = 2301173128800. Its totient is φ = 701447214336.

The previous prime is 1321405055387. The next prime is 1321405055417. The reversal of 1321405055415 is 5145505041231.

1321405055415 is a `hidden beast` number, since 1 + 3 + 2 + 1 + 40 + 50 + 554 + 15 = 666.

It is not a de Polignac number, because 1321405055415 - 2¹³ = 1321405047223 is a prime.

It is a super-2 number, since 2×1321405055415² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1321405055415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321405055417) 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, 40731421 + ... + 40763849.

It is an arithmetic number, because the mean of its divisors is an integer number (47941106850).

Almost surely, 2^{1321405055415} is an apocalyptic number.

1321405055415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1321405055415 is a deficient number, since it is larger than the sum of its proper divisors (979768073385).

1321405055415 is a wasteful number, since it uses less digits than its factorization.

1321405055415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36656 (or 36653 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 1321405055415 in words is "one trillion, three hundred twenty-one billion, four hundred five million, fifty-five thousand, four hundred fifteen".