1537899109066 has 16 divisors (see below), whose sum is σ = 2354208425064. Its totient is φ = 753210304704.

The previous prime is 1537899109063. The next prime is 1537899109081. The reversal of 1537899109066 is 6609019987351.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 499242578041 + 1038656531025 = 706571^2 + 1019145^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1537899108989 and 1537899109007.

It is not an unprimeable number, because it can be changed into a prime (1537899109063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11769021 + ... + 11898976.

Almost surely, 2^{1537899109066} is an apocalyptic number.

1537899109066 is a deficient number, since it is larger than the sum of its proper divisors (816309315998).

1537899109066 is a wasteful number, since it uses less digits than its factorization.

1537899109066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23668665.

The product of its (nonzero) digits is 22044960, while the sum is 64.

The spelling of 1537899109066 in words is "one trillion, five hundred thirty-seven billion, eight hundred ninety-nine million, one hundred nine thousand, sixty-six".