161454645270 has 48 divisors (see below), whose sum is σ = 424839712752. Its totient is φ = 42535840320.

The previous prime is 161454645259. The next prime is 161454645277. The reversal of 161454645270 is 72546454161.

161454645270 is a `hidden beast` number, since 1 + 6 + 14 + 54 + 64 + 527 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161454645277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10799401 + ... + 10814340.

It is an arithmetic number, because the mean of its divisors is an integer number (8850827349).

Almost surely, 2^161454645270 is an apocalyptic number.

161454645270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161454645270 is an abundant number, since it is smaller than the sum of its proper divisors (263385067482).

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

161454645270 is a wasteful number, since it uses less digits than its factorization.

161454645270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21613837 (or 21613834 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The spelling of 161454645270 in words is "one hundred sixty-one billion, four hundred fifty-four million, six hundred forty-five thousand, two hundred seventy".