8398357632064 has 63 divisors (see below), whose sum is σ = 16783585400631. Its totient is φ = 4169630889600.

The previous prime is 8398357632061. The next prime is 8398357632097. The reversal of 8398357632064 is 4602367538938.

The square root of 8398357632064 is 2897992.

It is a perfect power (a square), and thus also a powerful number.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8398357631987 and 8398357632005.

It is not an unprimeable number, because it can be changed into a prime (8398357632061) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3500773137 + ... + 3500775535.

Almost surely, 2^{8398357632064} is an apocalyptic number.

8398357632064 is the 2897992-nd square number.

It is an amenable number.

8398357632064 is a deficient number, since it is larger than the sum of its proper divisors (8385227768567).

8398357632064 is an frugal number, since it uses more digits than its factorization.

8398357632064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5112 (or 2552 counting only the distinct ones).

The product of its (nonzero) digits is 156764160, while the sum is 64.

Multiplying 8398357632064 by its sum of digits (64), we get a square (537494888452096 = 23183936²).

8398357632064 divided by its sum of digits (64) gives a square (131224338001 = 362249²).

The spelling of 8398357632064 in words is "eight trillion, three hundred ninety-eight billion, three hundred fifty-seven million, six hundred thirty-two thousand, sixty-four".