652251478381 has 16 divisors (see below), whose sum is σ = 681133118400. Its totient is φ = 623816339328.

The previous prime is 652251478343. The next prime is 652251478409. The reversal of 652251478381 is 183874152256.

It is a cyclic number.

It is not a de Polignac number, because 652251478381 - 2²¹ = 652249381229 is a prime.

It is a super-2 number, since 2×652251478381² (a number of 24 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 (652251478481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1603105 + ... + 1968361.

It is an arithmetic number, because the mean of its divisors is an integer number (42570819900).

Almost surely, 2^652251478381 is an apocalyptic number.

It is an amenable number.

652251478381 is a deficient number, since it is larger than the sum of its proper divisors (28881640019).

652251478381 is a wasteful number, since it uses less digits than its factorization.

652251478381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365868.

The product of its digits is 3225600, while the sum is 52.

The spelling of 652251478381 in words is "six hundred fifty-two billion, two hundred fifty-one million, four hundred seventy-eight thousand, three hundred eighty-one".