1662540540380 has 24 divisors (see below), whose sum is σ = 3504920107248. Its totient is φ = 662428602368.

The previous prime is 1662540540257. The next prime is 1662540540391. The reversal of 1662540540380 is 830450452661.

It is a super-3 number, since 3×1662540540380³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161720594 + ... + 161730873.

It is an arithmetic number, because the mean of its divisors is an integer number (146038337802).

Almost surely, 2^{1662540540380} is an apocalyptic number.

1662540540380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1662540540380 is an abundant number, since it is smaller than the sum of its proper divisors (1842379566868).

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

1662540540380 is a wasteful number, since it uses less digits than its factorization.

1662540540380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323451733 (or 323451731 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 44.

The spelling of 1662540540380 in words is "one trillion, six hundred sixty-two billion, five hundred forty million, five hundred forty thousand, three hundred eighty".