161700514245 has 32 divisors (see below), whose sum is σ = 291016583040. Its totient is φ = 86240268432.

The previous prime is 161700514211. The next prime is 161700514319. The reversal of 161700514245 is 542415007161.

161700514245 is a `hidden beast` number, since 1 + 617 + 0 + 0 + 5 + 14 + 24 + 5 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-161700514245 is a prime.

It is a super-2 number, since 2×161700514245² (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 31 ways as a sum of consecutive naturals, for example, 7382779 + ... + 7404648.

It is an arithmetic number, because the mean of its divisors is an integer number (9094268220).

Almost surely, 2^161700514245 is an apocalyptic number.

161700514245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161700514245 is a deficient number, since it is larger than the sum of its proper divisors (129316068795).

161700514245 is an frugal number, since it uses more digits than its factorization.

161700514245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14787453 (or 14787435 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The spelling of 161700514245 in words is "one hundred sixty-one billion, seven hundred million, five hundred fourteen thousand, two hundred forty-five".