640072562151 has 8 divisors (see below), whose sum is σ = 931014635904. Its totient is φ = 387922764920.

The previous prime is 640072562147. The next prime is 640072562167. The reversal of 640072562151 is 151265270046.

640072562151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 640072562151 - 2² = 640072562147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640072562851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9698069091 + ... + 9698069156.

It is an arithmetic number, because the mean of its divisors is an integer number (116376829488).

Almost surely, 2^640072562151 is an apocalyptic number.

640072562151 is a deficient number, since it is larger than the sum of its proper divisors (290942073753).

640072562151 is a wasteful number, since it uses less digits than its factorization.

640072562151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19396138261.

The product of its (nonzero) digits is 100800, while the sum is 39.

The spelling of 640072562151 in words is "six hundred forty billion, seventy-two million, five hundred sixty-two thousand, one hundred fifty-one".