57661545430993 has 16 divisors (see below), whose sum is σ = 69472987073280. Its totient is φ = 46787930044416.

The previous prime is 57661545430991. The next prime is 57661545431033. The reversal of 57661545430993 is 39903454516675.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 57661545430993 - 2¹ = 57661545430991 is a prime.

It is a super-3 number, since 3×57661545430993³ (a number of 42 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (57661545430991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1846099048 + ... + 1846130281.

It is an arithmetic number, because the mean of its divisors is an integer number (4342061692080).

Almost surely, 2^{57661545430993} is an apocalyptic number.

It is an amenable number.

57661545430993 is a deficient number, since it is larger than the sum of its proper divisors (11811441642287).

57661545430993 is a wasteful number, since it uses less digits than its factorization.

57661545430993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3692229456.

The product of its (nonzero) digits is 367416000, while the sum is 67.

The spelling of 57661545430993 in words is "fifty-seven trillion, six hundred sixty-one billion, five hundred forty-five million, four hundred thirty thousand, nine hundred ninety-three".