164001287650 has 24 divisors (see below), whose sum is σ = 305329457664. Its totient is φ = 65538781200.

The previous prime is 164001287603. The next prime is 164001287651. The reversal of 164001287650 is 56782100461.

It is not an unprimeable number, because it can be changed into a prime (164001287651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1489666 + ... + 1595965.

It is an arithmetic number, because the mean of its divisors is an integer number (12722060736).

Almost surely, 2^164001287650 is an apocalyptic number.

164001287650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164001287650 is a deficient number, since it is larger than the sum of its proper divisors (141328170014).

164001287650 is a wasteful number, since it uses less digits than its factorization.

164001287650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3086706 (or 3086701 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 164001287650 in words is "one hundred sixty-four billion, one million, two hundred eighty-seven thousand, six hundred fifty".