164242211502651 has 4 divisors (see below), whose sum is σ = 218989615336872. Its totient is φ = 109494807668432.

The previous prime is 164242211502587. The next prime is 164242211502671. The reversal of 164242211502651 is 156205112242461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 164242211502651 - 2⁶ = 164242211502587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164242211502671) 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, 27373701917106 + ... + 27373701917111.

It is an arithmetic number, because the mean of its divisors is an integer number (54747403834218).

Almost surely, 2^{164242211502651} is an apocalyptic number.

164242211502651 is a deficient number, since it is larger than the sum of its proper divisors (54747403834221).

164242211502651 is an equidigital number, since it uses as much as digits as its factorization.

164242211502651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54747403834220.

The product of its (nonzero) digits is 230400, while the sum is 42.

The spelling of 164242211502651 in words is "one hundred sixty-four trillion, two hundred forty-two billion, two hundred eleven million, five hundred two thousand, six hundred fifty-one".