161887400030 has 16 divisors (see below), whose sum is σ = 304066769184. Its totient is φ = 61939526880.

The previous prime is 161887399967. The next prime is 161887400083. The reversal of 161887400030 is 30004788161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351928901 + ... + 351929360.

It is an arithmetic number, because the mean of its divisors is an integer number (19004173074).

Almost surely, 2^161887400030 is an apocalyptic number.

161887400030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161887400030 is a deficient number, since it is larger than the sum of its proper divisors (142179369154).

161887400030 is a wasteful number, since it uses less digits than its factorization.

161887400030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703858291.

The product of its (nonzero) digits is 32256, while the sum is 38.

The spelling of 161887400030 in words is "one hundred sixty-one billion, eight hundred eighty-seven million, four hundred thousand, thirty".