1642395497660 has 24 divisors (see below), whose sum is σ = 3450649137936. Its totient is φ = 656649895680.

The previous prime is 1642395497647. The next prime is 1642395497669. The reversal of 1642395497660 is 667945932461.

It is a junction number, because it is equal to n+sod(n) for n = 1642395497593 and 1642395497602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642395497669) 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, 19225277 + ... + 19310516.

It is an arithmetic number, because the mean of its divisors is an integer number (143777047414).

Almost surely, 2^{1642395497660} is an apocalyptic number.

1642395497660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1642395497660 is an abundant number, since it is smaller than the sum of its proper divisors (1808253640276).

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

1642395497660 is a wasteful number, since it uses less digits than its factorization.

1642395497660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38537933 (or 38537931 counting only the distinct ones).

The product of its (nonzero) digits is 58786560, while the sum is 62.

The spelling of 1642395497660 in words is "one trillion, six hundred forty-two billion, three hundred ninety-five million, four hundred ninety-seven thousand, six hundred sixty".