1161699471616 has 36 divisors (see below), whose sum is σ = 2350626312412. Its totient is φ = 572892880896.

The previous prime is 1161699471563. The next prime is 1161699471649. The reversal of 1161699471616 is 6161749961611.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 602051846400 + 559647625216 = 775920^2 + 748096^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31062741 + ... + 31100116.

Almost surely, 2^{1161699471616} is an apocalyptic number.

1161699471616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1161699471616 is an abundant number, since it is smaller than the sum of its proper divisors (1188926840796).

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

1161699471616 is an frugal number, since it uses more digits than its factorization.

1161699471616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62162946 (or 62162932 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 58.

The spelling of 1161699471616 in words is "one trillion, one hundred sixty-one billion, six hundred ninety-nine million, four hundred seventy-one thousand, six hundred sixteen".