161256202038 has 12 divisors (see below), whose sum is σ = 349388437788. Its totient is φ = 53752067340.

The previous prime is 161256202027. The next prime is 161256202049. The reversal of 161256202038 is 830202652161.

161256202038 is a `hidden beast` number, since 1 + 6 + 1 + 2 + 5 + 620 + 20 + 3 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (161256202027) and next prime (161256202049).

It is a junction number, because it is equal to n+sod(n) for n = 161256201993 and 161256202011.

It is a congruent number.

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, 4479338928 + ... + 4479338963.

It is an arithmetic number, because the mean of its divisors is an integer number (29115703149).

Almost surely, 2^161256202038 is an apocalyptic number.

161256202038 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

161256202038 is an abundant number, since it is smaller than the sum of its proper divisors (188132235750).

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

161256202038 is a wasteful number, since it uses less digits than its factorization.

161256202038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8958677899 (or 8958677896 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

Adding to 161256202038 its reverse (830202652161), we get a palindrome (991458854199).

The spelling of 161256202038 in words is "one hundred sixty-one billion, two hundred fifty-six million, two hundred two thousand, thirty-eight".