161012853639 has 48 divisors (see below), whose sum is σ = 262301005824. Its totient is φ = 94317048000.

The previous prime is 161012853629. The next prime is 161012853649. The reversal of 161012853639 is 936358210161.

161012853639 is a `hidden beast` number, since 1 + 6 + 1 + 0 + 1 + 2 + 8 + 5 + 3 + 639 = 666.

It is an interprime number because it is at equal distance from previous prime (161012853629) and next prime (161012853649).

It is not a de Polignac number, because 161012853639 - 2⁸ = 161012853383 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161012853594 and 161012853603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161012853629) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 407562 + ... + 698664.

It is an arithmetic number, because the mean of its divisors is an integer number (5464604288).

Almost surely, 2^161012853639 is an apocalyptic number.

161012853639 is a deficient number, since it is larger than the sum of its proper divisors (101288152185).

161012853639 is a wasteful number, since it uses less digits than its factorization.

161012853639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291308 (or 291305 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 161012853639 in words is "one hundred sixty-one billion, twelve million, eight hundred fifty-three thousand, six hundred thirty-nine".