1997610941595 has 16 divisors (see below), whose sum is σ = 3196208639232. Its totient is φ = 1065382124640.

The previous prime is 1997610941537. The next prime is 1997610941657. The reversal of 1997610941595 is 5951490167991.

It is a happy number.

It is not a de Polignac number, because 1997610941595 - 2⁹ = 1997610941083 is a prime.

It is a super-2 number, since 2×1997610941595² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1093650 + ... + 2278440.

It is an arithmetic number, because the mean of its divisors is an integer number (199763039952).

Almost surely, 2^{1997610941595} is an apocalyptic number.

1997610941595 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1997610941595 is a deficient number, since it is larger than the sum of its proper divisors (1198597697637).

1997610941595 is a wasteful number, since it uses less digits than its factorization.

1997610941595 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297202.

The product of its (nonzero) digits is 27556200, while the sum is 66.

The spelling of 1997610941595 in words is "one trillion, nine hundred ninety-seven billion, six hundred ten million, nine hundred forty-one thousand, five hundred ninety-five".