1659708952380 has 120 divisors (see below), whose sum is σ = 5232998742048. Its totient is φ = 440342324352.

The previous prime is 1659708952373. The next prime is 1659708952411. The reversal of 1659708952380 is 832598079561.

1659708952380 is a `hidden beast` number, since 1 + 6 + 597 + 0 + 8 + 9 + 5 + 2 + 38 + 0 = 666.

It is a super-2 number, since 2×1659708952380² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2281144 + ... + 2919423.

Almost surely, 2^{1659708952380} is an apocalyptic number.

1659708952380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1659708952380 is an abundant number, since it is smaller than the sum of its proper divisors (3573289789668).

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

1659708952380 is a wasteful number, since it uses less digits than its factorization.

1659708952380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5200785 (or 5200774 counting only the distinct ones).

The product of its (nonzero) digits is 32659200, while the sum is 63.

The spelling of 1659708952380 in words is "one trillion, six hundred fifty-nine billion, seven hundred eight million, nine hundred fifty-two thousand, three hundred eighty".