1662073144400 has 120 divisors (see below), whose sum is σ = 4019378409984. Its totient is φ = 660471667200.

The previous prime is 1662073144373. The next prime is 1662073144427. The reversal of 1662073144400 is 44413702661.

It is an interprime number because it is at equal distance from previous prime (1662073144373) and next prime (1662073144427).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43421270 + ... + 43459530.

Almost surely, 2^{1662073144400} is an apocalyptic number.

1662073144400 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 1662073144400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2009689204992).

1662073144400 is an abundant number, since it is smaller than the sum of its proper divisors (2357305265584).

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

1662073144400 is a wasteful number, since it uses less digits than its factorization.

1662073144400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38989 (or 38978 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 38.

The spelling of 1662073144400 in words is "one trillion, six hundred sixty-two billion, seventy-three million, one hundred forty-four thousand, four hundred".