1995581697002 has 4 divisors (see below), whose sum is σ = 2993372545506. Its totient is φ = 997790848500.

The previous prime is 1995581696993. The next prime is 1995581697013. The reversal of 1995581697002 is 2007961855991.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1504672675801 + 490909021201 = 1226651^2 + 700649^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498895424249 + ... + 498895424252.

Almost surely, 2^{1995581697002} is an apocalyptic number.

1995581697002 is a deficient number, since it is larger than the sum of its proper divisors (997790848504).

1995581697002 is an equidigital number, since it uses as much as digits as its factorization.

1995581697002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997790848503.

The product of its (nonzero) digits is 12247200, while the sum is 62.

The spelling of 1995581697002 in words is "one trillion, nine hundred ninety-five billion, five hundred eighty-one million, six hundred ninety-seven thousand, two".