1321415153450 has 24 divisors (see below), whose sum is σ = 2808951069792. Its totient is φ = 453056623920.

The previous prime is 1321415153423. The next prime is 1321415153489. The reversal of 1321415153450 is 543515141231.

It is a happy number.

It is a super-2 number, since 2×1321415153450² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1321415153450.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1887735584 + ... + 1887736283.

It is an arithmetic number, because the mean of its divisors is an integer number (117039627908).

Almost surely, 2^{1321415153450} is an apocalyptic number.

1321415153450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321415153450 is an abundant number, since it is smaller than the sum of its proper divisors (1487535916342).

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

1321415153450 is a wasteful number, since it uses less digits than its factorization.

1321415153450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3775471886 (or 3775471881 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 1321415153450 in words is "one trillion, three hundred twenty-one billion, four hundred fifteen million, one hundred fifty-three thousand, four hundred fifty".