1516919889816 has 48 divisors (see below), whose sum is σ = 4108781476800. Its totient is φ = 505583744832.

The previous prime is 1516919889809. The next prime is 1516919889817. The reversal of 1516919889816 is 6189889196151.

It is a happy number.

1516919889816 is a `hidden beast` number, since 1 + 516 + 9 + 1 + 9 + 8 + 8 + 98 + 16 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1516919889817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 516616 + ... + 1816791.

It is an arithmetic number, because the mean of its divisors is an integer number (85599614100).

Almost surely, 2^{1516919889816} is an apocalyptic number.

It is an amenable number.

1516919889816 is an abundant number, since it is smaller than the sum of its proper divisors (2591861586984).

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

1516919889816 is a wasteful number, since it uses less digits than its factorization.

1516919889816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2342448 (or 2342441 counting only the distinct ones).

The product of its digits is 67184640, while the sum is 72.

The spelling of 1516919889816 in words is "one trillion, five hundred sixteen billion, nine hundred nineteen million, eight hundred eighty-nine thousand, eight hundred sixteen".