648215406058751 has 8 divisors (see below), whose sum is σ = 649230633256608. Its totient is φ = 647200191232000.

The previous prime is 648215406058733. The next prime is 648215406058793. The reversal of 648215406058751 is 157850604512846.

It is a happy number.

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 648215406058751 - 2⁶ = 648215406058687 is a prime.

It is a super-2 number, since 2×648215406058751² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648215406058651) 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, 104725091 + ... + 110741931.

It is an arithmetic number, because the mean of its divisors is an integer number (81153829157076).

Almost surely, 2^{648215406058751} is an apocalyptic number.

648215406058751 is a deficient number, since it is larger than the sum of its proper divisors (1015227197857).

648215406058751 is a wasteful number, since it uses less digits than its factorization.

648215406058751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6185553.

The product of its (nonzero) digits is 64512000, while the sum is 62.

The spelling of 648215406058751 in words is "six hundred forty-eight trillion, two hundred fifteen billion, four hundred six million, fifty-eight thousand, seven hundred fifty-one".