1661310562350 has 24 divisors (see below), whose sum is σ = 4120050195000. Its totient is φ = 443016149920.

The previous prime is 1661310562339. The next prime is 1661310562367. The reversal of 1661310562350 is 532650131661.

It is a super-3 number, since 3×1661310562350³ (a number of 38 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1661310562299 and 1661310562308.

It is a congruent number.

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, 5537701725 + ... + 5537702024.

It is an arithmetic number, because the mean of its divisors is an integer number (171668758125).

Almost surely, 2^{1661310562350} is an apocalyptic number.

1661310562350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1661310562350 is an abundant number, since it is smaller than the sum of its proper divisors (2458739632650).

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

1661310562350 is a wasteful number, since it uses less digits than its factorization.

1661310562350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11075403764 (or 11075403759 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 39.

The spelling of 1661310562350 in words is "one trillion, six hundred sixty-one billion, three hundred ten million, five hundred sixty-two thousand, three hundred fifty".