16161777770808 has 64 divisors (see below), whose sum is σ = 41811813014400. Its totient is φ = 5199735551360.

The previous prime is 16161777770797. The next prime is 16161777770821. The reversal of 16161777770808 is 80807777716161.

16161777770808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×16161777770808² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 1856238 + ... + 5980733.

It is an arithmetic number, because the mean of its divisors is an integer number (653309578350).

Almost surely, 2^{16161777770808} is an apocalyptic number.

It is an amenable number.

16161777770808 is an abundant number, since it is smaller than the sum of its proper divisors (25650035243592).

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

16161777770808 is a wasteful number, since it uses less digits than its factorization.

16161777770808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7839972 (or 7839968 counting only the distinct ones).

The product of its (nonzero) digits is 38723328, while the sum is 66.

The spelling of 16161777770808 in words is "sixteen trillion, one hundred sixty-one billion, seven hundred seventy-seven million, seven hundred seventy thousand, eight hundred eight".