161763355400 has 24 divisors (see below), whose sum is σ = 376099801770. Its totient is φ = 64705342080.

The previous prime is 161763355379. The next prime is 161763355463. The reversal of 161763355400 is 4553367161.

It can be written as a sum of positive squares in 3 ways, for example, as 157756718596 + 4006636804 = 397186^2 + 63298^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 404408189 + ... + 404408588.

Almost surely, 2^161763355400 is an apocalyptic number.

161763355400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161763355400 is an abundant number, since it is smaller than the sum of its proper divisors (214336446370).

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

161763355400 is a wasteful number, since it uses less digits than its factorization.

161763355400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808816793 (or 808816784 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 41.

The spelling of 161763355400 in words is "one hundred sixty-one billion, seven hundred sixty-three million, three hundred fifty-five thousand, four hundred".