161364135452 has 36 divisors (see below), whose sum is σ = 314235858888. Its totient is φ = 72073288800.

The previous prime is 161364135433. The next prime is 161364135521. The reversal of 161364135452 is 254531463161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1564574 + ... + 1664517.

It is an arithmetic number, because the mean of its divisors is an integer number (8728773858).

Almost surely, 2^161364135452 is an apocalyptic number.

It is an amenable number.

161364135452 is a deficient number, since it is larger than the sum of its proper divisors (152871723436).

161364135452 is a wasteful number, since it uses less digits than its factorization.

161364135452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3229170 (or 3229137 counting only the distinct ones).

The product of its digits is 259200, while the sum is 41.

The spelling of 161364135452 in words is "one hundred sixty-one billion, three hundred sixty-four million, one hundred thirty-five thousand, four hundred fifty-two".