64622340155 has 8 divisors (see below), whose sum is σ = 78639017184. Its totient is φ = 50969732800.

The previous prime is 64622340131. The next prime is 64622340157. The reversal of 64622340155 is 55104322646.

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

It is not a de Polignac number, because 64622340155 - 2¹² = 64622336059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64622340157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91017026 + ... + 91017735.

It is an arithmetic number, because the mean of its divisors is an integer number (9829877148).

Almost surely, 2^64622340155 is an apocalyptic number.

64622340155 is a deficient number, since it is larger than the sum of its proper divisors (14016677029).

64622340155 is a wasteful number, since it uses less digits than its factorization.

64622340155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182034837.

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 64622340155 in words is "sixty-four billion, six hundred twenty-two million, three hundred forty thousand, one hundred fifty-five".