161624290522 has 8 divisors (see below), whose sum is σ = 242469171072. Its totient is φ = 80801233500.

The previous prime is 161624290511. The next prime is 161624290523. The reversal of 161624290522 is 225092426161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×161624290522² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161624290523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5437354 + ... + 5466997.

It is an arithmetic number, because the mean of its divisors is an integer number (30308646384).

Almost surely, 2^161624290522 is an apocalyptic number.

161624290522 is a deficient number, since it is larger than the sum of its proper divisors (80844880550).

161624290522 is a wasteful number, since it uses less digits than its factorization.

161624290522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10911764.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 161624290522 in words is "one hundred sixty-one billion, six hundred twenty-four million, two hundred ninety thousand, five hundred twenty-two".