156234440168668 has 6 divisors (see below), whose sum is σ = 273410270295176. Its totient is φ = 78117220084332.

The previous prime is 156234440168663. The next prime is 156234440168683. The reversal of 156234440168668 is 866861044432651.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156234440168663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19529305021080 + ... + 19529305021087.

Almost surely, 2^{156234440168668} is an apocalyptic number.

It is an amenable number.

156234440168668 is a deficient number, since it is larger than the sum of its proper divisors (117175830126508).

156234440168668 is a wasteful number, since it uses less digits than its factorization.

156234440168668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39058610042171 (or 39058610042169 counting only the distinct ones).

The product of its (nonzero) digits is 159252480, while the sum is 64.

The spelling of 156234440168668 in words is "one hundred fifty-six trillion, two hundred thirty-four billion, four hundred forty million, one hundred sixty-eight thousand, six hundred sixty-eight".