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664581416315 = 51609426119387
BaseRepresentation
bin10011010101111000010…
…00111010010101111011
32100112101211011220221012
421222330020322111323
541342030320310230
61225145434104135
766004642555415
oct11527410722573
92315354156835
10664581416315
1123693597a533
12a8972b7b04b
134a8925c910b
14242473979b5
15124498e2395
hex9abc23a57b

664581416315 has 16 divisors (see below), whose sum is σ = 798221796960. Its totient is φ = 531182603520.

The previous prime is 664581416309. The next prime is 664581416333. The reversal of 664581416315 is 513614185466.

It is not a de Polignac number, because 664581416315 - 214 = 664581399931 is a prime.

It is a super-2 number, since 2×6645814163152 (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34270052 + ... + 34289438.

It is an arithmetic number, because the mean of its divisors is an integer number (49888862310).

Almost surely, 2664581416315 is an apocalyptic number.

664581416315 is a deficient number, since it is larger than the sum of its proper divisors (133640380645).

664581416315 is a wasteful number, since it uses less digits than its factorization.

664581416315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25262.

The product of its digits is 2073600, while the sum is 50.

The spelling of 664581416315 in words is "six hundred sixty-four billion, five hundred eighty-one million, four hundred sixteen thousand, three hundred fifteen".

Divisors: 1 5 1609 4261 8045 19387 21305 96935 6855949 31193683 34279745 82608007 155968415 413040035 132916283263 664581416315