1642435619915 has 12 divisors (see below), whose sum is σ = 2093679179616. Its totient is φ = 1236657406848.

The previous prime is 1642435619897. The next prime is 1642435619977. The reversal of 1642435619915 is 5199165342461.

It is not a de Polignac number, because 1642435619915 - 2¹⁶ = 1642435554379 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 568315379 + ... + 568318268.

It is an arithmetic number, because the mean of its divisors is an integer number (174473264968).

Almost surely, 2^{1642435619915} is an apocalyptic number.

1642435619915 is a deficient number, since it is larger than the sum of its proper divisors (451243559701).

1642435619915 is a wasteful number, since it uses less digits than its factorization.

1642435619915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136633686 (or 1136633669 counting only the distinct ones).

The product of its digits is 6998400, while the sum is 56.

The spelling of 1642435619915 in words is "one trillion, six hundred forty-two billion, four hundred thirty-five million, six hundred nineteen thousand, nine hundred fifteen".