652378918491 has 6 divisors (see below), whose sum is σ = 942325104500. Its totient is φ = 434919278988.

The previous prime is 652378918463. The next prime is 652378918519. The reversal of 652378918491 is 194819873256.

652378918491 is a `hidden beast` number, since 6 + 52 + 3 + 7 + 8 + 91 + 8 + 491 = 666.

It is an interprime number because it is at equal distance from previous prime (652378918463) and next prime (652378918519).

It is not a de Polignac number, because 652378918491 - 2⁹ = 652378917979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (652378918291) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36243273241 + ... + 36243273258.

Almost surely, 2^652378918491 is an apocalyptic number.

652378918491 is a deficient number, since it is larger than the sum of its proper divisors (289946186009).

652378918491 is a wasteful number, since it uses less digits than its factorization.

652378918491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72486546505 (or 72486546502 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 63.

The spelling of 652378918491 in words is "six hundred fifty-two billion, three hundred seventy-eight million, nine hundred eighteen thousand, four hundred ninety-one".