1423211573440 has 112 divisors (see below), whose sum is σ = 3398424841440. Its totient is φ = 567707402240.

The previous prime is 1423211573419. The next prime is 1423211573471. The reversal of 1423211573440 is 443751123241.

It is a self number, because there is not a number n which added to its sum of digits gives 1423211573440.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212765616 + ... + 212772304.

Almost surely, 2^{1423211573440} is an apocalyptic number.

1423211573440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1423211573440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1699212420720).

1423211573440 is an abundant number, since it is smaller than the sum of its proper divisors (1975213268000).

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

1423211573440 is a wasteful number, since it uses less digits than its factorization.

1423211573440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8450 (or 8440 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

Adding to 1423211573440 its reverse (443751123241), we get a palindrome (1866962696681).

The spelling of 1423211573440 in words is "one trillion, four hundred twenty-three billion, two hundred eleven million, five hundred seventy-three thousand, four hundred forty".