161555412350 has 48 divisors (see below), whose sum is σ = 319558899600. Its totient is φ = 60555194880.

The previous prime is 161555412307. The next prime is 161555412371. The reversal of 161555412350 is 53214555161.

It is a super-2 number, since 2×161555412350² (a number of 23 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 23 ways as a sum of consecutive naturals, for example, 220340 + ... + 609639.

It is an arithmetic number, because the mean of its divisors is an integer number (6657477075).

Almost surely, 2^161555412350 is an apocalyptic number.

161555412350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161555412350 is a deficient number, since it is larger than the sum of its proper divisors (158003487250).

161555412350 is a wasteful number, since it uses less digits than its factorization.

161555412350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830237 (or 830232 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 38.

The spelling of 161555412350 in words is "one hundred sixty-one billion, five hundred fifty-five million, four hundred twelve thousand, three hundred fifty".