145566720001 has 16 divisors (see below), whose sum is σ = 151243200000. Its totient is φ = 139935394816.

The previous prime is 145566719999. The next prime is 145566720007. The reversal of 145566720001 is 100027665541.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 145566720001 - 2¹ = 145566719999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145566720007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6225390 + ... + 6248728.

It is an arithmetic number, because the mean of its divisors is an integer number (9452700000).

Almost surely, 2^145566720001 is an apocalyptic number.

It is an amenable number.

145566720001 is a deficient number, since it is larger than the sum of its proper divisors (5676479999).

145566720001 is a wasteful number, since it uses less digits than its factorization.

145566720001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24296.

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 145566720001 in words is "one hundred forty-five billion, five hundred sixty-six million, seven hundred twenty thousand, one".