1321405053016 has 32 divisors (see below), whose sum is σ = 2554916682240. Its totient is φ = 640366900128.

The previous prime is 1321405053013. The next prime is 1321405053029. The reversal of 1321405053016 is 6103505041231.

It is a super-2 number, since 2×1321405053016² (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 (1321405053013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17021346 + ... + 17098801.

It is an arithmetic number, because the mean of its divisors is an integer number (79841146320).

Almost surely, 2^{1321405053016} is an apocalyptic number.

It is an amenable number.

1321405053016 is a deficient number, since it is larger than the sum of its proper divisors (1233511629224).

1321405053016 is a wasteful number, since it uses less digits than its factorization.

1321405053016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34120303 (or 34120299 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 1321405053016 in words is "one trillion, three hundred twenty-one billion, four hundred five million, fifty-three thousand, sixteen".