145013216651 has 4 divisors (see below), whose sum is σ = 145156937400. Its totient is φ = 144869495904.

The previous prime is 145013216639. The next prime is 145013216671. The reversal of 145013216651 is 156612310541.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145013216651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145013216671) 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, 71858861 + ... + 71860878.

It is an arithmetic number, because the mean of its divisors is an integer number (36289234350).

Almost surely, 2^145013216651 is an apocalyptic number.

145013216651 is a deficient number, since it is larger than the sum of its proper divisors (143720749).

145013216651 is a wasteful number, since it uses less digits than its factorization.

145013216651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143720748.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 145013216651 in words is "one hundred forty-five billion, thirteen million, two hundred sixteen thousand, six hundred fifty-one".