647252354869848 has 384 divisors, whose sum is σ = 2309590262353920. Its totient is φ = 165197338375680.

The previous prime is 647252354869831. The next prime is 647252354869889. The reversal of 647252354869848 is 848968453252746.

647252354869848 is a `hidden beast` number, since 6 + 4 + 7 + 2 + 5 + 2 + 3 + 5 + 486 + 98 + 48 = 666.

It is a super-2 number, since 2×647252354869848² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 53528515 + ... + 64496562.

It is an arithmetic number, because the mean of its divisors is an integer number (6014557974880).

Almost surely, 2^{647252354869848} is an apocalyptic number.

It is an amenable number.

647252354869848 is an abundant number, since it is smaller than the sum of its proper divisors (1662337907484072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

647252354869848 is a wasteful number, since it uses less digits than its factorization.

647252354869848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118025149 (or 118025133 counting only the distinct ones).

The product of its digits is 22295347200, while the sum is 81.

The spelling of 647252354869848 in words is "six hundred forty-seven trillion, two hundred fifty-two billion, three hundred fifty-four million, eight hundred sixty-nine thousand, eight hundred forty-eight".